Aptitude Day 137

Problems on Probability:

1. One card is drawn at random from a pack of 52 cards. What’s the probability that the card drawn is a face card?

Solution:

                 The face cards are King, Queen and Jack. We’ve these 3 cards in all 4 suits.

                 So their total will be 3*4 = 12.

                  P(E) = n(E)/ n(S)

                         = 12/52

                         = 3/13.

2. One card is drawn at random from a pack of 52 cards. What’s the probability of getting a Jack of Spade or a Queen of Diamond?

Solution:

                 P(E) = n(E)/ n(S)

                         = 2/52

                         = 1/26.