The 100 prisoners problem is a mathematical problem in probability theory and combinatorics. In this problem, 100 numbered prisoners must find their own numbers in one of 100 drawers in order to survive. The rules state that each prisoner may open only 50 drawers and cannot ... If just one prisoner does not find his number, all prisoners die.. Find the probability of not selecting odd or prime numbers. 3) A number is chosen at random from 1 to 50. Find the probability of selecting numbers less