If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x + y = ?
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1
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The difference between a positive proper fraction and its reciprocal is 9/20. The fraction is:
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2
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How many prime numbers exist in 67 x 353 x 1110?
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3
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A girl multiplies 987 by a certain number and obtains 559981 as her answer. If in the answer, both 9’s are wrong but the other digits are correct, then the correct answer will be
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4
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If the number 517*324 is completely divisible by 3, then the smallest whole number in the place of * will be
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5
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One-quarter of one-seventh of land is sold for Rs. 30,000. What is the value of an eight thirty-fifth of load?
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6
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The largest natural number which exactly divides the product of any four consecutive natural numbers is:
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7
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Find the last unit digit of 55^5 ( Using Euler Theorem)
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8
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(?) - 19657 - 33994 = 9999
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9
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The largest 4 digit number exactly divisible by 88 is:
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10
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217 X 217 + 183 X 183
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