Book Maths Puzzle

Find the largest number (between 1-100) with which you multiply 882, so that the product may be a perfect square.

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Book Other Question

Four prime numbers are given in ascending order of their magnitudes, the product of the first three is 385 and that of the last three is 1001. Find the largest of the given prime numbers Find the number whose square is equal to the difference between the squares of 75.12 and 60.12