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If (64)2 - (36)2 = 20 x a, then a = ?
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$(y^{n} - b^{n}) $is completely divisible by (y - b), when
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How many of the following numbers are divisible by 3 but not by 9.
4320, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276
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The difference between the squares of two consecutive odd integers is always divisible by:
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If p and q are the two digits of the number 653pq such that this number is divisible by 80, then p+q is equal to :
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A six-digit number is formed by repeating a three-digit number; for example, 256256 or 678678 etc. Any number of this form is always exactly divisible by :
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If -1 ≤ a ≤ 2 and 1 ≤ b ≤ 3, then least possible value of (2a – 3b) is:
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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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One-quarter of one-seventh of a land is sold for Rs. 30,000. What is the value of an eight thirty-fifth of load?
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If the number 653ab is divisible by 90, then (a + b) = ?
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