I need help finding the answers

Question

A standard deck of cards contains 52 cards. One card is selected from the deck. (A) compute the probability of randomly selecting a four or a ten. (B) compute the probability of the randomly selecting a four or ten or two. (C) compute the probability of randomly selecting a nine or spade.

Answer 1

A) 4/52 + 4/52 = 8/52. The probability of selecting a four or a ten is 15.38%.

B) 4/52 + 4/52 + 4/52 = 12/52. The probability of selecting a four or a ten or a two is 23.08%.

C) 4/52 + 13/52 - 1/52 = 16/52. The probability of selecing a nine or a spade is 30.77%.