A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:
Let E = event of getting a queen of club or a king of heart.
Then, n(E) = 2.
P(E) = n(E)/n(S) = 2/52 = 1/26.
A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:
Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:
One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)?
P (getting a face card) = 12/52 = 3/13.
A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Number of white balls = 8.
P (drawing a white ball) = 8/14 = 4/7.