61. Let N be the greatest number that will divide 1305, 4665 and 6905, leaving the same remainder in each case. Then sum of the digits in N is:
a) 4 b) 5
c) 6 d) 8
62. The greatest number which can divide 1536, 1868 and 2764 leaving the same remainder 12 in each case, is:
a) 64 b) 124
c) 156 d) 260
63. The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively is:
a) 123 b) 127
b) 235 d) 305
64. Which of the following fractions is the largest?
a) 7/8 b) 13/16
c) 31/40 d) 63 / 80
65. What will be the number which when doubled will be exactly divisible by 12, 19, 21 and 30?
a) 196 b) 630
c) 1260 d) 2520
66. The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly, is:
a) 30/7 b) 30/98
c) 60/147 d) 50/294.
67. The least numbers of five digits which is exactly divisible by 12, 15 and 18, is:
a) 10010 b) 10015
c) 10020 d) 10080
68. The least number which is a perfect square and is divisible by 15, 25, and 40 and 75 is:
a) 9000 b) 9400
c) 9600 d) 9800
69. The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
a) 3 b) 13
c) 23 d) 33
70. The least number which is a perfect square and is divisible by each of the numbers 16, 20 and 24, is
a) 1600 b) 3600
c) 6400 d) 14400
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