Step-by-step explanation:
Total number of outcomes = 52 , since each deck consists of 52 cards
probability = Number of favorable outcomes/ Total number of outcomes
a) Number of favorable outcomes = Number of club cards = 13
P(club) =13/52 = 1/4
b) Number of favorable outcomes = Number of red cards = 26
P(red card) = 26/52 = 1/2
c) Number of favorable outcomes = Number of cards that are not hearts = 39/52 = 3/4