Problems on Numbers for Exam

Q51. The number (5n² + 5n) for natural number n is always divisible by
(a) 5 only
(b) 10 only
(c) 5 and 10 only
(d) None of the above

Q52. The numbers 1, 3, 5 ⋅ ⋅ ⋅ ⋅ ⋅ 25 are multiplied together. The number of zeros at the right end of the product is
(a) 0
(b) 1
(c) 2
(d) 3

Q53. Find the number such that its third is greater than its 4th by 12
(a) 99
(b) 105
(c) 123
(d) 144

Q54. The sum of one half, one-third and one-fourth of a number exceeds the number by 10. The number is
(a) 103
(b) 111
(c) 120
(d) 135

Q55. If the sum of three consecutive numbers is more than the middle number by 120, the middle number is
(a) 60
(b) 65
(c) 75
(d) 80

Q56. The sum of two numbers is 2490. If 5.5% of one number is equal to 9.5% of the other, the smaller number is
(a) 536
(b) 725
(c) 825
(d) 913

Q57. The product of two successive number is 1980. Which is the greater number ?
(a) 41
(b) 45
(c) 52
(d) 63

Q58. If the difference of two numbers is 4 and the difference of their square is 56, then the larger number is
(a) 7
(b) 8
(c) 9
(d) 10

Q59. If the product of two number is 6 and one of the numbers is 3/2, then the sum of the two numbers is
(a) 3½
(b) 3¾
(c) 5½
(d) 7¾

Q60. The product of two fractions is 14/15 and their quotient is 35/24. The smaller of the fraction is
(a) 1/3
(b) 4/5
(c) 3/7
(d) 5/11

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