CAIE IGCSE Mathematics Core C8.3 Probability of Combined Events Topic Practice

Question 1

[Maximum number: 4]

Question (a)

(a)

Hemang buys two televisions.

The probability that a television is faulty is 0.02 .

Figure for Question (a) — CAIE IGCSE Mathematics Core
[ 4 ]

Question (i)

(i)

Complete the tree diagram.

[ 2 ]

Question (ii)

(ii)

Find the probability that Hemang buys two faulty televisions.

[ 2 ]

Question 2

[Maximum number: 1]

The Venn diagram shows information about the number of students in a class who like apples ( A ) and bananas ( B ).

Figure for Question 2 — CAIE IGCSE Mathematics Core

One of the students is chosen at random.

Find the probability that this student does not like apples and does not like bananas.

Question 3

[Maximum number: 3]

Mario sells ice creams in five flavours.

The table shows the relative frequency of some of the ice cream flavours Mario sells.

Mario sells three times as many chocolate ice creams as banana ice creams.

Figure for Question 3 — CAIE IGCSE Mathematics Core

The probability that any customer is an adult is 0.7 .

First customer

First customer

(a)

Complete the tree diagram.

Second customer

Second customer

(b)

Find the probability that the first two customers are adults.

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