Using a standard deck of 52 cards find each probability.

Question

1.)King, queen, or black card

2.)Spade or hearts card

Answer 1

I will assume you are drawing one card

number of favourable outcomes
= 4 kings + 4 queens + 26 black cards - 2black kings - 2black queens
= 30

prob(king or queen or black card ) = 30/52 = 15/26

spade or hearts = 13 + 4 - 1 = 16
prob = 16/52 = 4/13