Need help!!!!!!!!
In a game,there are 70 pupil in which 40 are boys and 30 are girls. out of which 10 pupil are selected at random 1 from the total group, thus selected as a leader a random. what is the probability that the person chosen as a leader is boy?

Question

Need help!!!!!!!!
In a game,there are 70 pupil in which 40 are boys and 30 are girls. out of which 10 pupil are selected at random 1 from the total group, thus selected as a leader a random. what is the probability that the person chosen as a leader is boy?

anonymous · Answer

The grammar sucks on this problem. However, intuiting your meaning; the 10 pupils do not affect the probability of the one, since you don't know how many were boys and girls, the distribution is preserved. The probability of the leader being a boy is 4/7