Book Maths Puzzle Numerical Ability Number System

N is a 3-digit number that is a perfect square. When the first digit is increased by 1, the second digit is increased by 2, the third digit is increased by 3, the result is still a perfect square. Determine N.

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Book Other Question

Find the smallest positive integer whose product with 116 gives a perfect square. next number after the series 23,32,36,72,76,