Probability of A or B = Probability of A + Probability of B - Probability of A and B. Probability of drawing king or heart = Probability of drawing king + Probability of drawing heart - Probability of drawing kings which are hearts from the deck of cards. A deck of cards contain 52 cards, of which there are 4 kings and 13 hearts and 1 king which is heart also. Probability of drawing a king =
4
52
Probability of drawing a heart =
13
52
Probability of drawing a king which are heart also =