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

CourseCourseConceptConceptDocumentDocument

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: 1]

Elize, Lily and Marco start a business.

Lily buys 20 rolls of ribbon.

8 are red, 6 are blue, 4 are yellow and 2 are pink.
A roll of ribbon is chosen at random.
On the probability scale, draw an arrow ( ↓ ) to show the probability that this roll is
(a) yellow

Figure for Question 1 — CAIE IGCSE Mathematics Core

(b) not red

Figure for Question 1 — CAIE IGCSE Mathematics Core

(c) green.

Figure for Question 1 — CAIE IGCSE Mathematics Core

Question 2

[Maximum number: 1]
Figure for Question 2 — CAIE IGCSE Mathematics Core

There are 110 people in a group.
G={people who own gold jewellery}G=\{\text{people who own gold jewellery}\}S={people who own silver jewellery}S=\{\text{people who own silver jewellery}\}
18 people own both gold jewellery and silver jewellery.
46 people own gold jewellery.
11 people own no gold jewellery and no silver jewellery.

One of the 110 people is chosen at random.

Write down the probability that this person owns gold jewellery but not silver jewellery.

Question 3

[Maximum number: 1]

There are 20 cars in a car park and 3 of the cars are blue.

One of the 20 cars is picked at random.

Find the probability that this car is not blue.

All question bank results loaded