Q521
Open questionIf (a2 - b2) ÷ (a + b) = 25, then (a - b) = ?
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Q522
Open questionThe sum of the digits of a natural number (10n - 1) is 4707, where n is a natural number. The value of n is :
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Q523
Open questionThe sum of digits of a two-digit number is 12 and the difference between the two-digits of the two-digit number is 6. What is the-digit number ?
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Q524
Open question7386038 is divisible by :
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Q525
Open questionThe number of terms between 11 and 200 which are divisible by 7 but not by 3 are :
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Q526
Open questionUnit's digit in (784)126 + (784)127 is :
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Q527
Open questionIf n is any positive integer, 34n - 43n is always divisible by :
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Q528
Open questionWhen 10025 - 25 is written in decimal notation, the sum of its digits is :
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Q529
Open questionWhich is the greatest 5-digit number exactly divisible by 279 ?
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Q530
Open questionIf p,q,r are all real numbers then (p - q)3 + (q - r)3 + (r - p)3 is equal to :
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Q531
Open questionThe numbers 2272 and 875 are divided by a three-digit numbers N, giving the same remainder. The sum of the digits of N is :
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Q532
Open questionThe remainder when (1523 + 2323) is divided by 19, is :
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Q533
Open questionWhich one of the following numbers is divisible by 15 ?
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Q534
Open questionHow many numbers will be there between 300 and 500, where 4 comes only one time ?
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Q535
Open questionA number when divided by three consecutive numbers 9, 11, 13 leaves the remainders 8, 9 and 8 respectively. If the order of divisors is reversed, the remainders will be :
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Q536
Open questionThe divisor is 25 times the quotient and 5 times the remainder. If the quotient is 16, then the dividend is :
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Q537
Open questionThe remainder when 784 is divided by 342 is :
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Q538
Open questionThe difference between the square of two consecutive odd integers is always divisible by :
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Q539
Open questionThe smallest number that must be added to 803642 in order to obtain a multiple of 11 is :
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Q540
Open questionA 4-digit number is formed by repeating a 2-digit number such as 2525, 3232 etc. Any number of this form is exactly divisible by :
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