51. 476 ** 0 is divisible by both 3 and 11. The non-zero digits in the hundred's and ten's places are respectively:
52. When a number is divided by 13, the remainder is 11. When the same number is divided by 17, then remainder is 9. What is the number ?
53. 397 × 397 + 104 × 104 + 2 × 397 × 104 = ?
54. The difference of the squares of two consecutive even integers is divisible by which of the following integers ?
55. Which one of the following is a prime number ?
56. The sum of even numbers between 1 and 31 is:
57. If (64)2 - (36)2 = 20 × x, then x = ?
58. What is the unit digit in the product (365 × 659 × 771)?
59. A number when divided successively by 4 and 5 leaves remainders 1 and 4 respectively. When it is successively divided by 5 and 4, then the respective remainders will be
60. The sum of all three digit numbers, each of which on divide by 5 leaves remainder 3, is -
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