1.If a die is thrown once, the probability of getting a prime number is
(a) 14
(b) 12
(c) 15
(d) 13
Answer: (b) 12
2.Cards each marked with one of the numbers 4, 5, 6 …20 are put in a box and mixed thoroughly. One card is drawn at random from the box. The probability of getting an even prime number is
(a) 0
(b) 120
(c) 1
(d) 12
Answer: (a) 0
3.A fair die is cast in the game of ‘Ludo’. The probability of getting a score greater than 6 is
(a) 1
(b) 16
(c) zero
(d) 23
Answer: (c) zero
4.The probability that a non leap year selected at random will contain 53 Sunday’s is
(a) 17
(b) 27
(c) 37
(d) 57
Answer: (a) 17
5.A bag contains cards which are numbered from 2 to 90. A card is drawn at random from the bag. The probability that it bears a two digit number is:
(a) 8890
(b) 8892
(c) 8189
(d) 8990
Answer: (c) 8189
6.The probability of getting one head is
(a) 12
(b) 14
(c) 34
(d) None of these
Answer: (a) 12
7.A number is selected at random from 1 to 75. The probability that it is a perfect square is
(a) 445
(b) 1075
(c) 675
(d) 875
Answer: (d) 875
8.Three face cards of spade are removed from a well shuffled pack of 52 cards and a card is drawn from the remaining pack. The probability of getting a black face card is
(a) 1250
(b) 749
(c) 349
(d) 950
Answer: (c) 349
9.Ram and Shyam are friends. The probability that both will have the same birth day is
(a) 1365
(b) 2365
(c) 364365
(d) none of these
Answer: (a) 1365
10.Find the probability of getting a number greater than 2 when a die is thrown
(a) 16
(b) 26
(c) 46
(d) 23
Answer: (d) 23
11. The decimal form of 129225775 is
(a) terminating
(b) non-termining
(c) non-terminating non-repeating
(d) none of the above
Answer: c
12. HCF of 8, 9, 25 is
(a) 8
(b) 9
(c) 25
(d) 1
Answer: d
13. Which of the following is not irrational?
(a) (2 – √3)2
(b) (√2 + √3)2
(c) (√2 -√3)(√2 + √3)
(d)27√7
Answer: c
14. The product of a rational and irrational number is
(a) rational
(b) irrational
(c) both of above
(d) none of above
Answer: b
15. The sum of a rational and irrational number is
(a) rational
(b) irrational
(c) both of above
(d) none of above
Answer: b
16. The product of two different irrational numbers is always
(a) rational
(b) irrational
(c) both of above
(d) none of above
Answer: b
17. The sum of two irrational numbers is always
(a) irrational
(b) rational
(c) rational or irrational
(d) one
Answer: a
18. If b = 3, then any integer can be expressed as a =
(a) 3q, 3q+ 1, 3q + 2
(b) 3q
(c) none of the above
(d) 3q+ 1
Answer: a
19. The product of three consecutive positive integers is divisible by
(a) 4
(b) 6
(c) no common factor
(d) only 1
Answer: b
20. The set A = {0,1, 2, 3, 4, …} represents the set of
(a) whole numbers
(b) integers
(c) natural numbers
(d) even numbers
Answer: a
