From a pack of 52 playing cards, 4 cards are drawn one by one with replacement. Find the following probabilities:

Question

a) P(to get 4 spades)
b) P(to get 4 aces)

Answer 1

a) 13 spades in 52 cards (a deck is 4 suites)
... P(4 spades) = 1/4 * 1/4 * 1/4 * 1/4

b) 4 aces in 52 cards
... P(4 aces) = 1/13 * 1/13 * 1/13 * 1/13