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240 questions
Mathematics/Paper 5/Probability
CAIEAS Level9709-as · Paper 5

Probability

240 questions· page 1 of 24

Q42025 Feb/Mar·P522 partsMedium-Easy
(a)

Find the probability that all three cars are the same colour.

(b)

Find the probability that, when the 3 cars are selected, at least one car is white and at least one car is black.

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Q32025 May/Jun·P522 partsMedium-Easy
(a)

Find the probability that both marbles selected are the same colour.

(b)

Find the probability that the first marble is blue given that the second marble is red.

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Q52025 May/Jun·P533 partsMedium-Easy
(a)

Draw a tree diagram to represent this information, giving the probability on each branch.

(b)

Find the probability that both marbles chosen are the same colour.

(c)

Find the probability that the marble chosen from bag AA is blue, given that the marble chosen from bag BB is blue.

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Q42025 May/Jun·P554 partsEasy
(a)

Draw a tree diagram to illustrate this information, showing all the probabilities.

(b)

Find the probability that a randomly chosen student who applies to Drydale College is accepted.

(c)

Find the probability that a randomly chosen student who applies to Drydale College takes at least two tests given that the student is accepted.

(d)

Three friends apply to Drydale College.

Find the probability that all three are rejected.

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Q42025 Oct/Nov·P512 partsMedium
(a)

Complete the tree diagram below by entering all the remaining outcomes and probabilities.

(b)

Find the probability that all three marbles chosen are the same colour.

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Q42025 Oct/Nov·P522 partsMedium
(a)

Write down an equation in terms of xx and hence find the value of xx.

(b)

Find the probability that the two cards have pictures of the same type of vehicle on them.

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Q52025 Oct/Nov·P533 partsMedium-Easy
(a)

Draw a fully labelled tree diagram to illustrate this information, including all the probabilities.

(b)

Find the probability that one red marble and one blue marble are obtained.

(c)

Find the probability that a white counter is chosen from box AA, given that one red marble and one blue marble are obtained.

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Q32025 Oct/Nov·P553 partsMedium-Easy
(a)

Draw a tree diagram to represent this information, showing all the probabilities.

(b)

Find the probability that the two discs that Priti chooses are blue.

(c)

Find the probability that the two discs that Priti chooses come from bag XX given that at least one of the discs is red.

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Q12024 Feb/Mar·P522 partsEasy
(a)

Find the probability that both the marbles chosen are red.

(b)

Find the probability that the first marble chosen is blue given that the second marble chosen is red.

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Q62024 May/Jun·P512 partsMedium-Easy
(a)

Draw up the probability distribution table for XX.

(b)

Harry has two other coins, each of which is biased so that the probability of obtaining a head when it is thrown is pp. He throws all five coins at the same time. The random variable YY is the number of heads that he obtains.

Given that P(Y=0)=6P(Y=5)\text{P}(Y = 0) = 6\text{P}(Y = 5), find the value of pp.

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