1 Three unbiased coins are tossed. What is the probability of getting at most two heads ? A) 3/4 B) 1/4 C) 3/8 D) 7/8
2 In a single throw of a die, what is the probability of getting a number greater than 4 ? A) 1/2 B) 1/3 C) 2/3 D) 1/4
3 In a simultaneous throw of two dice, what is the probability of getting a total of 10 or 11 ? A) 1/4 B) 1/6 C) 7/12 D) 5/36
4 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 ? A) 3/10 B) 3/20 C) 2/5 D) 1/2
5 Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ? A) 1/2 B) 2/5 C) 8/15 D) 9/20
6 Two cards are drawn together from a pack of 52 cards. The probability that one is a spade and one is a heart, is : A) 3/20 B) 29/34 C) 47/100 D) 13/102
7 Two cards are drawn from a pack of 52 cards. The probability that either both are red or both are kings, is : A) 7/13 B) 3/26 C) 63/221 D) 55/221
8 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 ? A) 3/4 B) 4/7 C) 1/8 D) 3/7
9 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 : A) 1/22 B) 3/22 C) 2/91 D) 2/77
10 A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue ? A) 10/21 B) 11/21 C) 2/7 D) 5/7
11 A box contains 4 red balls, 5 green balls and 6 white balls. A ball is drawn at random from the box. What is the probability that the ball drawn is either red or green ? A) 2/5 B) 3/5 C) 1/5 D) 7/15
12 In a class, there are 15 boys and 10 girls. Three students are selected at random. The probability that 1 girl and 2 boys are selected, is : A) 21/46 B) 25/117 C) 1/50 D) 3/25
13 Four persons are chosen at random from a group of 3 men, 2 women and 4 children. The chance that exactly 2 of them are children, is : A) 1/9 B) 1/5 C) 1/12 D) 10/21
14 In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he. has offered English or Hindi ? A) 2/5 B) 3/4 C) 3/5 D) 3/10
15 A man and his wife appear in an interview for two vacancies in the same post. The probability of husband's selection is (1/7) and the probability of wife's selection is (1/5). What is the probability that only one of them is selected ? A) 4/5 B) 2/7 C) 8/15 D) 4/7
