Book Maths Puzzle Numerical Ability

Find the smallest positive integer whose product with 116 gives a perfect square.

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Book Other Question

In the decimal expansion of 1/7, what is the 100th digit after the decimal? 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.