Question

From a deck of 52 cards a card is drawn, what is the probability that the card is a King or a Red card

Answer 1

Total cards in a deck = 52

Let A be a event that a card is king

Let B  be a event that a card is Red

So Probability of a card drawn being king = P(A) =   

since there are 4 kings in a deck of card

Probability of a card drawn being red = P(B) = 26 / 52 = 1/ 2

since there are 26 red cards in a deck of card

Probability of a card drawn being king and red too =

Now we need Probability of card drawn being king or a red card =

P(AUB) = = 0.538