If a card is drawn from an ordinary deck of 52 cards, find the probability that the card is

Question

a. a red card?_______

b. a diamond card or a face card?_______

c. a diamond card and a black card?_______

Answer 1

a. Pr(R) = 1/2 = 50% chance

b Pr(diamond or red card) = Pr(D)+P(R) - Pr(D&R) = 1/4 + 1/2 -1/4 = 1/2

c. Pr(diamond & red) = 0. Impossible, no diamond is red