Question

In a group of 90 students, 65 watch rugby, 71 play a sport and 15 do neither.
Find the probability that a student chosen at random from those who play a sport
does not watch rugby.

Answer 1

Answer:

10/71

Step-by-step explanation:

15 students -do neither

90-15 = 75 - watch rugby or play a sport

65 + 71 = 136

136 - 75 = 61 - watch rugby and play a sport

75 - 65 = 10 - play a sport

75 - 71 = 4  - watch rugby

61 + 10 = 71 - play sport

10/71 -  play a sport but does't watch rugby from those that play sport