Question

In a group of 100 people 60 one to play cricket, 20 people like to play both cricket and tennis. How many people like to play tennis but not cricket

Answer 1

let x peoples like tennis

then, 60 + 20 + x = 100

or 80 + x+ = 100

or x = 100 - 80

= 20 peoples.

Answer 2

Answer:

ANSWER

P(cricket)=P(A)=60

P(cricket & tennis)=P(A∩B)=20

P(total)=P(A∪B)=100

P(A∪B)=P(A)+P(B)−P(A∩B)

100=60+P(B)−20

P(B)=60

P(tennis but not cricket)=P(tennis)-P(both tennis and cricket)

=60−20=40