Which one of the following is not a prime number?
- (a) 31
- (b) 61
- (c) 71
- (d) 91
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(112 x 5)4 = ?
- (a) 67000
- (b) 70000
- (c) 76500
- (d) 77200
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It is given that (2^32 + 1) is completely divisible by a whole number. Which of the following numbers is completely divisible by this number?
- (a) 2^16 + 1
- (b) 2^16 – 1
- (c) 2^96+1
- (d) 7*2^23
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What least number must be added to 1056, so that the sum is completely divisible by 23?
- (a) 2
- (b) 3
- (c) 18
- (d) 21
- (e) none of these
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1397 x 1397 = ?
- (a) 1951609
- (b) 1981709
- (c) 18362619
- (d) 2031719
- (e) none of these
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How many of the following numbers are divisible by 132: 264, 396, 462, 792, 968, 2178, 5184, 6336?
- (a) 4
- (b) 5
- (c) 6
- (d) 7
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(935421 x 625) = ?
- (a) 575648125
- (b) 584638125
- (c) 584649125
- (d) 585628125
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The largest 4-digit number exactly divisible by 88 is:
- (a) 9944
- (b) 9768
- (c) 9988
- (d) 8888
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Which of the following is a prime number?
- (a) 33
- (b) 81
- (c) 97
- (d) 99
- (e) none of these
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What is the unit digit in ((6374)1793x (625)317x (341)491?
- (a) 0
- (b) 2
- (c) 3
- (d) 5
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