Question

There are 130 people in a sport centre.

65 people use the gym.
51 people use the swimming pool.
44 people use the track.
15 people use the gym and the pool.
14 people use the pool and the track.
10 people use the gym and the track.
1 person uses all three facilities.
Given that a randomly selected person uses the gym and the track, what is the probability they
do not use the swimming pool?

Answer 1

1/13

Explanation:

there are 10 people that use the gym and track and 10 is 1/13 of 130