There were 800 people drawing lots, and 40 people were drawn. Five of the 800 people are from Team A. What is the probability that Team A will draw 40 people?
As long as the probability that there is no A team is calculated, the probability that there is an A pair can be known.
The probability of not having a = c (795 795,40)/c (800,40) = 756x757x758x 759x760/796/797/798/799 40)/c (800 = 0.77327.