Question

a. How many cards must be chosen from a standard deck of 52 cards to guarantee that at least two of four aces (A) are chosen?

Answer 1

There are 4 aces in a standard deck of 52 cards. Then

$$52-4+2=50$$

50 cards must be chosen from a standard deck of 52 cards to guarantee that at least two of four aces (A) are chosen.