Question

two cards are drawn without replacement from a standard deck of 52 playing cards. find the probability that both are odd numbers (aces are considered odd because they have a value of 1 or 11).

Answer 1

odd cards: Ace, 3, 5, 7 , 9 , Jack, King
7 odd cards per suit, 4 suits = 7 * 4 = 28 odd cards
so 1st card being odd is a 28/52 = 7/13 probability

2nd card would be a 27/51 = 9/17 probability

7/13 x 9/17 = 63/221 probability of both