Everything Maths Grade 10

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3 4

5

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8 9

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11 12

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A B

(A[B)′

A\B

S

The sample space can be described asfn:n εZ; 1 n 15 g.

They are asked to identify the complementary event set ofB, also known asB′. They get stuck, and you

offer to help them find it.

Which of the following sets best describes the event set ofB′?

• f1; 5; 13; 14g


• f2; 3; 4; 6; 10; 11; 12g


• f3; 4; 6; 11; 12g

2.A group of learners are given the following Venn diagram:

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2

3

4

5

6

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8

9

10

11

12

13

14

15

A B

(A[B)′

A\B

S

The sample space can be described asfn:n εZ; 1 n 15 g.

They are asked to identify the complementary event set of(A[B), also known as(A[B)′. They get

stuck, and you offer to help them find it.

Which of the following sets best describes the event set of(A[B)′?

• f2; 4; 9; 11; 13; 15g


• f1; 3; 5; 6; 7; 8; 10; 12; 14g


• f6; 8; 12g

3.Given the following Venn diagram:

488 14.7. Complementary events