CAIE IGCSE Mathematics Core C8.1 Introduction to Probability Topic Practice

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Covered syllabus points

C8.1.1 Understand and use the probability scale from 0 to 1.C8.1.2 Calculate the probability of a single event.C8.1.3 Understand that the probability of an event not occurring = 1 – the

Question 1

[Maximum number: 3]

A bag contains 6 red balls, 4 green balls and 2 blue balls.
Zia takes a ball from the bag at random.
The diagram shows a probability scale.

Figure for Question 1 — CAIE IGCSE Mathematics Core

Which arrow shows the probability that,

Question (a)

(a)

Zia takes a green ball

[ 1 ]

Question (b)

(b)

Zia takes a yellow ball

[ 1 ]

Question (c)

(c)

Zia does not take a blue ball.

[ 1 ]

Question 2

[Maximum number: 1]

A bag contains these cards.

One of these cards is picked at random.
Find the probability that the number on the card is greater than 3 .

Question 3

[Maximum number: 3]
Figure for Question 3 — CAIE IGCSE Mathematics Core

The diagram shows a fair 5 -sided spinner.
The spinner is spun once.

Question (a)

(a)

Write down the colour the spinner is least likely to land on.

[ 1 ]

Question (b)

(b)

Find the probability that the spinner lands on white.

[ 1 ]

Question (c)

(c)

Find the probability that the spinner does not land on red.

[ 1 ]

Question 4

[Maximum number: 1]

A bag contains 6 red balls, 4 green balls and 2 blue balls.
Zia takes a ball from the bag at random.
The diagram shows a probability scale.

Figure for Question 4 — CAIE IGCSE Mathematics Core

Which arrow shows the probability that,

Zia takes a yellow ball

Question 5

[Maximum number: 1]
Figure for Question 5 — CAIE IGCSE Mathematics Core

The diagram shows a fair 5 -sided spinner.
The spinner is spun once.

Find the probability that the spinner does not land on red.

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