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Earn 100

There is a natural number that becomes equal to the square of a natural number when 100 is added to it and to the square of another natural number when 169 is added to it. Find the number.

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Important Questions on Number Systems

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Find two natural numbers whose sum is 85 and whose least common multiple is 102.
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Find two three-digit numbers whose sum is a multiple of 504 and the quotient is a multiple of 6.
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The difference between the digits in a two-digit number is equal to 2, and the sum of the squares of the same digits is 52. Find the possible numbers.
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On dividing a two-digit number by the product of its digits, a quotient of 3 and a remainder of 9 are obtained. On subtracting the product of the digits of the number from the square of the sum of its digits, the given number is obtained. Find the number.
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The sum of the digits of a three-digit number is 17, and the sum of the squares of its digits is 109. If we subtract 495 from that number, we shall get a number consisting of the same digits written in the reverse order. Find the number.
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The sum of the cubes of the digits constituting a two-digit number is 243 and the product of the sum of its digits and the product of its digits is 162. Find the possible two-digit numbers.
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The difference between two numbers is 16. What can be said about the total numbers divisible by 7 that can lie in between these two numbers?