The sum of first 45 natural numbers is:
1035
1280
2070
2140
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1
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What least number must be subtracted from 427398 so that the remaining number is divisible by 15?
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2
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The Unit digit in the product (784 X 618 X 917 X463)
Solution4 X 8 X 7 X 3 |
3
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What is the unit digit in 27^20?
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4
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Find the sum to 200 terms of the series 1 + 4 + 6 + 5 + 11 + 6 + ....
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5
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The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder. What is the smaller number ?
Solution |
6
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{(476 + 424)^2 - 4 X 476 X 424}
Solution |
7
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The difference between the two numbers is 2395. When the larger number is divided by the smaller ones, the quotient is 6 and the remainder is 15. The smaller number is
Solution |
8
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Which of the following is a prime number ?
Solution |
9
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The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is:
Solution |
10
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The digit in unit’s place of the product 71 × 72 × ..... × 79 is
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