11. A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:
12. 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:
13. Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is:
14. 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)?
15. 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?
16. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3 ?
17. From a pack of 52 cards, two cards are drawn together at random. What is the probability of both the cards being kings?
18. An urn contains 6 red, 4 blue, 2 green and 3 yellow marbles. If 4 marbles are picked up at random, what is the probability that at least one of them is blue?
19. In a simultaneous throw of two coins, the probability of getting at least one head is-
20. A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is-
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