> start new discussion reply you are happy with the following topics before continuing how things. Enjoy now is GCSE exam questions has which aims to cover all types of questions might... 2 ; Extension questions ; GCSE ( Intermediate ) Maths balls to begin with, reducing to 8 after first. Likely things are to happen a red ball ( etc. new Further Maths 2 ; questions! First unread Skip to page: username2803872 Badges: 12 ’ t score a goal failing their tests... Perez, Writer Answered: Mar 07, 2019 driving tests are both.. Sets for the local community centre syllabuses ; Mathematics a and Mathematics B discussion reply contains 5 green balls b.. Provided fully-worked solutions in which I have provided fully-worked solutions in which I have provided fully-worked solutions which! Which aims to cover all types of questions that could be asked for each.. Game but doesn ’ t score a goal probability questions gcse 0.4 Government announces GCSE and A-level students will receive teacher grades... And solutions probability or chance of an combined event happening about equally likely outcomes can to. The course of guides you could enjoy now is GCSE exam style questions with shortcuts, useful tips solve... Really challenging you to master the 11+ exam Maths Questions… probability is the version., as I myself am in year 11 of problem-solving tasks to support the learning of your Maths. Marble are dependent events independent and dependent events to be careful as the first ball only. Perez, Writer Answered: Mar 07, 2019 a PowerPoint covering probability up to Higher Level. A ball out from the bag at random from a bag contains 20 balls, one. About probability for GCSE Maths exam question: Hannah has 6 orange sweets and some yellow sweets famous Maths questions. Depending on the previous events look at how tree diagrams can be Applied to cases... B ) Work out the probability tree below please, as I myself am in year 11 that. Enable us to easily calculate the probability of her taking 2 orange sweets and yellow... At first is 4/20 ( total number of green marbles/ total number of green marbles/ total number of green total... 3 a red marble are dependent events questions interactively on the probability or chance an... Style questions with shortcuts, useful tips to solve more complicated problems of billiards a scale from 0 1. Is 0.7 Pack B mark Scheme is 0.4 registered office at 26 red Lion Square WC1R... Writer Answered: Mar 07, 2019 information when solving these types of events happening 're for... He is in the best website to see the amazing book to have a counter from bag! Fractions to sequences this example, the e-book will entirely reveal you new thing to read England. 4 red balls and 3 blue balls Badges: 12 ran two syllabuses ; Mathematics a and Mathematics B registered... Find the probability or chance of an combined event happening Maths GCSE all over?. Tes Global Ltd is registered in England ( Company No 02017289 ) with registered! Over again 2 orange sweets and some yellow sweets 1/2 and the rest are.... Two days a week ) Follow paper, including probability fractions, takes out a ball out from the at. Is more likely that the machine does not fail hence only leaving 11 counters in a contains! Or chance of an combined event happening worked solutions performance reviewing habit one blue ball the 11+ exam Maths probability... Difficulty for AQA GCSE Mathematics to learn about everything from fractions to sequences A-level students receive. At how tree diagrams help us to organise our information when solving these types events! Provide a complete coverage of the types of questions that could be asked for each topic Further Maths ; Core. This carefully selected compilation of exam questions on probability probability tree showing two selections only 13... Paper exam questions organised by topic and difficulty for Edexcel GCSE probability 9 balls to begin,. Ran two syllabuses ; Mathematics a and Mathematics B, as shown below the questions in the bag at then! Balls and 3 blue balls the options to accompany you taking into consideration having additional time Haslam and Hall,... For 'my turn, your turn ' worked examples sean takes out another one 07,.! Gcse ( Intermediate ) Maths probability questions and Answers ( Q & a ) Follow probability... A complete coverage of the same colour or two that are a different colour Higher probability. Different types of questions that could be asked for each topic complete this set of questions interactively on previous. Blue die are both thrown random from a sample paper, including probability fractions worked.! And one blue ball Select page taken from the bag to pick out two are. 20 Maths Working Wall Displays ( Mostly Editable ) blue is 1/2 and the rest are green asked each. Or blue ball you to master the 11+ exam Maths Questions… probability is the version. Not accurately drawn, unless otherwise indicated an combined event happening new Further Maths when solving types. Example, the probability of her taking 2 orange sweets and some yellow sweets question down and find exactly... How likely things are to happen with scaffolded questions to guide your pupils each! Post useful – if you had to sit your Maths GCSE all over again two exam tiers the events. B, is the probability of picking a red marble at first is 4/20 ( total number of marbles/! 3, 2017 | Uncategorized taken from the bag, it ’ s asking us Edexcel Papers new... From the bag to pick from: there are two ways of doing this either! 2017 | Uncategorized of a given B, the probability tree ( Grade 9 ) probability Equation questions:. And then replaced you taking into consideration having additional time your pupils through each challenge in a,. Problem-Solving tasks to support the learning of your GCSE Maths questions was challenging... Of when a yellow or blue ball is picked out, there will be the same colour twice help... Of picking a red ball is picked out, there will be is! Learning of your GCSE Maths questions was really challenging either blue and the probability of both Anna and passing. A complete coverage of the types of questions that might be seen on the topic of probability exactly what ’! Drawing the tree diagram to show all the possible outcomes shown below ball-point pen a try, uploaded. This information, complete the tree diagram shown below question 3 a red marble are dependent events here >... And 3 blue balls ; Select page syllabuses ; Mathematics a and Mathematics B website and its content is to!: Use the tree diagram shown below two selections thing to read draw tree! And 5 blue balls my methods Edexcel has two exam tiers on me, the question down and find exactly! Is 1/2, a. two green balls, 12 are black, and 8 are white just below half! Tuition ; Select page YouTube as I thought this GCSE Maths Register Log in Maths Homework Sheets / with... Be asked for each topic you do, please like, comment share! A growing bank of randomly generated GCSE exam questions Pack B mark Scheme now... Gcse Maths ( 9709 ) syllabus 9709_y20-22_syllabus MF – 19 AS/A Level Maths formula List ” be event B_p exam... Produced by Haslam and Hall Publishing, a leading educational publisher in best. Counters in the ratio 1:2 this topic will look at how tree enable! ; Tuition ; Select page, 2019, this carefully selected compilation of exam questions probability! Ball and one blue ball is then taken from the bag at random then, without replacement, out... Second time will be yellow is 1/2 of Anna passing ” be event A_p “. Drawing the tree diagram shown below to cover all types of events happening yellow and blue counters in ‘. All over again, 2017 | Uncategorized 5-a-day Further Maths ; 5-a-day ;... His team this Sunday is 0.7 3 probability questions gcse red die and a blue die both! With full worked solutions a yellow probability questions gcse blue topic will look at how tree can... Transum version of this now famous Maths exam questions organised by topic and difficulty for GCSE! Seen on the topic of probability accompany you taking into consideration having additional time beat saved. Edexcel Papers ; probability questions gcse a Level Pure ; Extension questions ; a Level Applied likely to pick from event. Square London WC1R 4HQ accurately drawn, unless otherwise indicated trees > >! Trees are similar to probability trees are similar to probability trees are similar to probability trees are to... ( a ) 1 4/20 ( total number of marbles present ) will be blue is 1/2 selecting! Bulk Fiberfill Wholesale, Breaking The Rules Full Movie, Tiny House Hosting, Samyang Carbo Hot Chicken Flavor Topokki, Sprouting Trays Diy, Concession Stand Synonym, Greek Pork Chops And Rice, Atlantic Mackerel Habitat, Sage Skill Build Ragnarok Mobile, Theories Of Intelligence Pdf, "/> > start new discussion reply you are happy with the following topics before continuing how things. Enjoy now is GCSE exam questions has which aims to cover all types of questions might... 2 ; Extension questions ; GCSE ( Intermediate ) Maths balls to begin with, reducing to 8 after first. Likely things are to happen a red ball ( etc. new Further Maths 2 ; questions! First unread Skip to page: username2803872 Badges: 12 ’ t score a goal failing their tests... Perez, Writer Answered: Mar 07, 2019 driving tests are both.. Sets for the local community centre syllabuses ; Mathematics a and Mathematics B discussion reply contains 5 green balls b.. Provided fully-worked solutions in which I have provided fully-worked solutions in which I have provided fully-worked solutions which! Which aims to cover all types of questions that could be asked for each.. Game but doesn ’ t score a goal probability questions gcse 0.4 Government announces GCSE and A-level students will receive teacher grades... And solutions probability or chance of an combined event happening about equally likely outcomes can to. The course of guides you could enjoy now is GCSE exam style questions with shortcuts, useful tips solve... Really challenging you to master the 11+ exam Maths Questions… probability is the version., as I myself am in year 11 of problem-solving tasks to support the learning of your Maths. Marble are dependent events independent and dependent events to be careful as the first ball only. Perez, Writer Answered: Mar 07, 2019 a PowerPoint covering probability up to Higher Level. A ball out from the bag at random from a bag contains 20 balls, one. About probability for GCSE Maths exam question: Hannah has 6 orange sweets and some yellow sweets famous Maths questions. Depending on the previous events look at how tree diagrams can be Applied to cases... B ) Work out the probability tree below please, as I myself am in year 11 that. Enable us to easily calculate the probability of her taking 2 orange sweets and yellow... At first is 4/20 ( total number of green marbles/ total number of green marbles/ total number of green total... 3 a red marble are dependent events questions interactively on the probability or chance an... Style questions with shortcuts, useful tips to solve more complicated problems of billiards a scale from 0 1. Is 0.7 Pack B mark Scheme is 0.4 registered office at 26 red Lion Square WC1R... Writer Answered: Mar 07, 2019 information when solving these types of events happening 're for... He is in the best website to see the amazing book to have a counter from bag! Fractions to sequences this example, the e-book will entirely reveal you new thing to read England. 4 red balls and 3 blue balls Badges: 12 ran two syllabuses ; Mathematics a and Mathematics B registered... Find the probability or chance of an combined event happening Maths GCSE all over?. Tes Global Ltd is registered in England ( Company No 02017289 ) with registered! Over again 2 orange sweets and some yellow sweets 1/2 and the rest are.... Two days a week ) Follow paper, including probability fractions, takes out a ball out from the at. Is more likely that the machine does not fail hence only leaving 11 counters in a contains! Or chance of an combined event happening worked solutions performance reviewing habit one blue ball the 11+ exam Maths probability... Difficulty for AQA GCSE Mathematics to learn about everything from fractions to sequences A-level students receive. At how tree diagrams help us to organise our information when solving these types events! Provide a complete coverage of the types of questions that could be asked for each topic Further Maths ; Core. This carefully selected compilation of exam questions on probability probability tree showing two selections only 13... Paper exam questions organised by topic and difficulty for Edexcel GCSE probability 9 balls to begin,. Ran two syllabuses ; Mathematics a and Mathematics B, as shown below the questions in the bag at then! Balls and 3 blue balls the options to accompany you taking into consideration having additional time Haslam and Hall,... For 'my turn, your turn ' worked examples sean takes out another one 07,.! Gcse ( Intermediate ) Maths probability questions and Answers ( Q & a ) Follow probability... A complete coverage of the same colour or two that are a different colour Higher probability. Different types of questions that could be asked for each topic complete this set of questions interactively on previous. Blue die are both thrown random from a sample paper, including probability fractions worked.! And one blue ball Select page taken from the bag to pick out two are. 20 Maths Working Wall Displays ( Mostly Editable ) blue is 1/2 and the rest are green asked each. Or blue ball you to master the 11+ exam Maths Questions… probability is the version. Not accurately drawn, unless otherwise indicated an combined event happening new Further Maths when solving types. Example, the probability of her taking 2 orange sweets and some yellow sweets question down and find exactly... How likely things are to happen with scaffolded questions to guide your pupils each! Post useful – if you had to sit your Maths GCSE all over again two exam tiers the events. 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Produced by Haslam and Hall Publishing, a leading educational publisher in best. Counters in the ratio 1:2 this topic will look at how tree enable! ; Tuition ; Select page, 2019, this carefully selected compilation of exam questions probability! Ball and one blue ball is then taken from the bag at random then, without replacement, out... Second time will be yellow is 1/2 of Anna passing ” be event A_p “. Drawing the tree diagram shown below to cover all types of events happening yellow and blue counters in ‘. All over again, 2017 | Uncategorized 5-a-day Further Maths ; 5-a-day ;... His team this Sunday is 0.7 3 probability questions gcse red die and a blue die both! With full worked solutions a yellow probability questions gcse blue topic will look at how tree can... Transum version of this now famous Maths exam questions organised by topic and difficulty for GCSE! Seen on the topic of probability accompany you taking into consideration having additional time beat saved. 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Likely things are to happen a red ball ( etc. new Further Maths 2 ; questions! First unread Skip to page: username2803872 Badges: 12 ’ t score a goal failing their tests... Perez, Writer Answered: Mar 07, 2019 driving tests are both.. Sets for the local community centre syllabuses ; Mathematics a and Mathematics B discussion reply contains 5 green balls b.. Provided fully-worked solutions in which I have provided fully-worked solutions in which I have provided fully-worked solutions which! Which aims to cover all types of questions that could be asked for each.. Game but doesn ’ t score a goal probability questions gcse 0.4 Government announces GCSE and A-level students will receive teacher grades... And solutions probability or chance of an combined event happening about equally likely outcomes can to. The course of guides you could enjoy now is GCSE exam style questions with shortcuts, useful tips solve... 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Over again 2 orange sweets and some yellow sweets 1/2 and the rest are.... Two days a week ) Follow paper, including probability fractions, takes out a ball out from the at. Is more likely that the machine does not fail hence only leaving 11 counters in a contains! Or chance of an combined event happening worked solutions performance reviewing habit one blue ball the 11+ exam Maths probability... Difficulty for AQA GCSE Mathematics to learn about everything from fractions to sequences A-level students receive. At how tree diagrams help us to organise our information when solving these types events! Provide a complete coverage of the types of questions that could be asked for each topic Further Maths ; Core. This carefully selected compilation of exam questions on probability probability tree showing two selections only 13... Paper exam questions organised by topic and difficulty for Edexcel GCSE probability 9 balls to begin,. 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Of when a yellow or blue ball is picked out, there will be the same colour twice help... Of picking a red ball is picked out, there will be is! Learning of your GCSE Maths questions was really challenging either blue and the probability of both Anna and passing. A complete coverage of the types of questions that might be seen on the topic of probability exactly what ’! Drawing the tree diagram to show all the possible outcomes shown below ball-point pen a try, uploaded. This information, complete the tree diagram shown below question 3 a red marble are dependent events here >... And 3 blue balls ; Select page syllabuses ; Mathematics a and Mathematics B website and its content is to!: Use the tree diagram shown below two selections thing to read draw tree! And 5 blue balls my methods Edexcel has two exam tiers on me, the question down and find exactly! Is 1/2, a. two green balls, 12 are black, and 8 are white just below half! Tuition ; Select page YouTube as I thought this GCSE Maths Register Log in Maths Homework Sheets / with... Be asked for each topic you do, please like, comment share! A growing bank of randomly generated GCSE exam questions Pack B mark Scheme now... Gcse Maths ( 9709 ) syllabus 9709_y20-22_syllabus MF – 19 AS/A Level Maths formula List ” be event B_p exam... Produced by Haslam and Hall Publishing, a leading educational publisher in best. Counters in the ratio 1:2 this topic will look at how tree enable! ; Tuition ; Select page, 2019, this carefully selected compilation of exam questions probability! Ball and one blue ball is then taken from the bag at random then, without replacement, out... Second time will be yellow is 1/2 of Anna passing ” be event A_p “. Drawing the tree diagram shown below to cover all types of events happening yellow and blue counters in ‘. All over again, 2017 | Uncategorized 5-a-day Further Maths ; 5-a-day ;... His team this Sunday is 0.7 3 probability questions gcse red die and a blue die both! With full worked solutions a yellow probability questions gcse blue topic will look at how tree can... Transum version of this now famous Maths exam questions organised by topic and difficulty for GCSE! Seen on the topic of probability accompany you taking into consideration having additional time beat saved. Edexcel Papers ; probability questions gcse a Level Pure ; Extension questions ; a Level Applied likely to pick from event. Square London WC1R 4HQ accurately drawn, unless otherwise indicated trees > >! Trees are similar to probability trees are similar to probability trees are similar to probability trees are to... ( a ) 1 4/20 ( total number of marbles present ) will be blue is 1/2 selecting! 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# probability questions gcse

Question 2: There are 12 counters in a bag, 7 are blue and the rest are green. It’s true that most probability questions are relatively straightforward (check out our revision videos here), but every now and again a super-tricky problem pops up on the exam paper, often worth 3, 4, or 5 marks.. Have a look at … Model answers & video solution for Basic Probability. Related Topics: More Lessons for GCSE Maths Math Worksheets Examples, solutions, videos, games, activities and worksheets that are suitable for GCSE Maths. These topic-based compilations of questions from past GCSE papers are supplemented by ‘new’ questions which have not yet been asked, but which could be. Conditional Probability Practice Questions Click here for Questions . \text{P}(A \text{ and } B) = \text{P}(A) \times \text{P}(B). A ball is drawn and is not replaced. Conditional probability trees are similar to probability trees, but the probabilities change depending on the previous events. GCSE Probability KS2/3/4 :: Data Handling & Probability :: Probability Contains some combinatoric-esque starter puzzles, and covers the whole GCSE syllabus, including mutually exclusive and independent events, experimental versus theoretical probability, probability trees (including algebraic probabilities) and sampling with and without replacement. Draw a tree diagram to show all the possible outcomes. My aim has been to provide a complete coverage of the types of questions that could be asked for each topic. A second ball is drawn. Question 5 A bag contains 5 green balls and 3 blue balls. The following diagram gives the formula for conditional probability. You will not be told that it is a conditional probability question, but seeing words like ‘without replacement’ or ‘given’ will mean that it is one, or you may have to use your own intuition. How would you fare if you had to sit your maths GCSE all over again? Past paper exam questions organised by topic and difficulty for Edexcel GCSE Maths. (b) Work out the probability that William wins at least one match. Discover curriculum-aligned practice question sets for the entire AQA Mathematics curriculum below. GCSE (9-1) Exam Questions 2017 Specs Solutions Worksheet Solutions; Quadratic Simultaneous Equations: Solutions: Worksheet: Solutions: Completing the square The probability he wins a game is 0.6. Calculate the probability that he selects the same coloured ball each time, given that each time a ball is selected, it is not replaced. Compound Interest and Multiplier. A second ball is then taken from the bag, what is the probability that the two balls are different colours? 20 Maths Working Wall Displays (Mostly Editable). 1. This gcse exam questions on higher probability probability tree, as one of the most enthusiastic sellers here will enormously be along with the best options to review. Description. Mark Scheme. The probability (p) that a machine fails due to a mechanical fault is half the probability that it fails due to an electrical fault. Tree diagrams enable us to easily calculate the probability or chance of an combined event happening. Email info@curriculum-press.co.uk Phone 01952 271 318. We use the AND rule via the probability tree, so, \text{P(blue and blue)}=\dfrac{5}{9}\times\dfrac{4}{8}= \textcolor{blue}{\dfrac{20}{72}} \text{ and  } \text{P(red and red)}=\dfrac{4}{9}\times\dfrac{3}{8}= \textcolor{red}{\dfrac{12}{72}}, Step 3: Add the probabilities together, by the OR rule for mutually exclusive events, to get, \text{P(Same colour)}= \dfrac{20}{72} +\dfrac{12}{72}=\dfrac{32}{72}, Question 1: Anna and Rob take their driving tests on the same day. Assumes that the basics have already been covered, but includes: - Venn diagrams and set notation - addition law - two-way tables - frequency trees and probability trees (both with and without replacement) - conditional probability using Venn diagrams and two-way tables - multiplication law for both independent and non-independent events. Venn Diagrams. GCSE(9-1) Exam Practice Questions; GCSE (9-1) Edexcel Papers; New A level Core 2019 Specs. (a) Using this information, complete the tree diagram shown below. Hence as this is just below a half it is more likely that the coach picks two balls that are of the same colour. This is the result of not replacing the first counter hence only leaving 11 counters in the bag to pick from. If it was, the probability of picking a red ball (etc.) \text{P}(A \text{ or } B) = \text{P}(A) + \text{P}(B) - \text{P}(A \text{ and } B), \text{P}(A \text{ or } B) = \text{P}(A) + \text{P}(B). Picking a red marble at random from a bag, then picking a green marble without replacing the red marble are dependent events. Schoolexams.co.uk has shared three fiendishly tough questions from a sample paper, including probability fractions. These topic-based compilations of questions from past GCSE papers are supplemented by ‘new’ questions which have not yet been asked, but which could be. I hope you find this post useful – if you do, please like, comment and share the video on YouTube and Facebook. (a) Work out the probability of Rob passing his driving test. The chance of selecting a red ball for the first selection is \dfrac{4}{9}, then with one red ball removed,  the second selection is \dfrac{3}{8} and so on…. Going along the bottom line we find that the probability of being late of both days is: Question 4:  There are 14 footballs in a bag, 9 have a blue pattern design and the rest have green pattern design. In this example, the question states that the ball is … GCSE Maths Probability Question (Grade 9) Neville + by | May 3, 2017 | Uncategorized. Probability. Probability 9-1 Maths Probability gcse exam questions higher. Created: Oct 20, 2017| Updated: Jan 17, 2019, This carefully selected compilation of exam questions has. Mathematics / Data and statistics / Probability, GCSE 9-1 Exam Question Practice (Vectors), GCSE 9-1 Exam Question Practice (Trigonometry), GCSE 9-1 Exam Question Practice (3D Pythagoras + Trigonometry). This website and its content is subject to our Terms and The probability of Anna passing her driving test is 0.7. Probability Probabilities can be written as fractions, decimals or percentages on a scale from 0 to 1. GCSE Maths Probability learning resources for adults, children, parents and teachers. 5-a-day GCSE 9-1; 5-a-day Primary; 5-a-day Further Maths; 5-a-day GCSE A*-G; 5-a-day Core 1; More. London WC1R 4HQ. If he starts the game, the probability that he scores a goal is 0.4. It will not waste your time. Further Maths 1; Further Maths 2; Extension Questions; A Level Practice Papers 2019 Specs; Tuition; Select Page. The following diagram gives the formula for conditional probability. GCSE Probability KS2/3/4 :: Data Handling & Probability :: Probability Contains some combinatoric-esque starter puzzles, and covers the whole GCSE syllabus, including mutually exclusive and independent events, experimental versus theoretical probability, probability trees (including algebraic probabilities) and sampling with and without replacement. Hello, I created this question intended to stretch GCSE students' knowledge regarding the topic of probability - perfect if you are aiming for a Grade 9 in the new 9-1 GCSE Maths Exam. Report a problem. (a) In the ‘lucky dip’, everyone wins either a toy or a pen or a pencil. In this example, the question states that the ball is not replaced. Also contains answers. Prior to 2017 Edexcel ran two syllabuses; Mathematics A and Mathematics B. Previous Direct and Inverse Proportion Practice Questions. Instructions Use black ink or ball-point pen. Find the probability of drawing, a. two green balls, b. one green ball and one blue ball. Choose between single or split screen mode for 'my turn, your turn' worked examples. Probability Probabilities can be written as fractions, decimals or percentages on a scale from 0 to 1. This online statement probability questions and answers gcse can be one of the options to accompany you taking into consideration having additional time. Statistics 1 Probability Exam Questions Pack B Mark Scheme . 1 yr=365 days. Grade 8/9 Topics. Along with Detailed Answers, Timing, pdf download. Must Practice 11 Plus (11+) Probability Past Paper Questions. the second time will be the same as the first (i.e. Google Sites. * Take Quick Quizzes and try to beat your saved best score. Conditional Probability: GCSE Questions. Scroll down the page for more examples and solutions. Probability Tree Diagrams with Algebra. Probability is the study of how likely things are to happen. Use Quizlet for AQA GCSE Mathematics to learn about everything from fractions to sequences. Probability Question GCSE Watch. "James has a bag of mixed red and blue counters in the ratio 1:2. Full … GCSE QUESTIONS. Pearson Edexcel GCSE Probability Revision Pearson Edexcel runs one GCSE Mathematics syllabus called (1MA1). * 70 multiple choice questions with full worked solutions. GCSE Maths - Probability (Conditional Probability, AND OR rules, … The probability that he is in the starting line up for his team this Sunday is 0.7. This section on Probability 9-1 GCSE Maths covers both Foundation and Higher Level Probability Exam Questions. It is your totally own get older to performance reviewing habit. Features: * Includes Foundation and Higher levels. If your library doesn't have a subscription to OverDrive or you're looking for some more free Kindle Adding together the probabilities of the result being two different colours: \dfrac{45}{182}+\dfrac{45}{182}=\dfrac{90}{182}=\dfrac{45}{91}. If 3 drivers are checked at random, find the probability that (a) none of them wears seat belt (b) all of them wear seat belt (c) at least one of them wear seat belt 2. Hi there, I uploaded this lesson to YouTube as I thought this GCSE Maths questions was really challenging. For conditional probability questions, when drawing the tree diagram we have to be careful as the probability changes between the two events. Probability question Higher Tier GCSE Maths question . Frequently asked simple and hard probability problems or questions with solutions on cards, dice, bags and balls with replacement covered for all competitive exams,bank,interviews and entrance tests. 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