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## Lesson details

### Key learning points

- In this lesson, we will look at finding the probability of events happening from Venn diagrams. We will also briefly look at probability trees and how we can fill in a Venn diagram from the information on a probability tree.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 7 Questions

Q1.

B

C

D

Q2.

Simplify

A

B

D

Q3.

A

B

C

Q4.

1

2

4

Q5.

A

C

D

Q6.

A

B

C

Q7.

A

B

C

### 6 Questions

Q1.

Katie has a set of 20 cards numbered 1 to 20. She chooses a card at random. What is the probability that the card she chooses is a square number or a factor of 2?

1/20

12/20

2/20

Q2.

A

C

D

Q3.

A person is chosen at random. Find the probability that this person does not belong to a badminton club.

13/25

13/45

28/45

Q4.

A person is chosen at random. Find the probability that this person belongs to a tennis club but not a badminton club.

13/38

20/45

21/45

Q5.

Katie has a set of 15 cards numbered 1 to 15. She chooses a card at random. What is the probability that the card she chooses is an odd number or a square number?

10/15

11/15

2/15

Q6.

Simi has a set of 10 cards numbered 1 to 10. She chooses a card at random. What is the probability that the card she chooses is prime or even?

0

1/10

9/10