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Find the Smallest Number by Which 28812 Must Be Divided So that the Quotient Becomes a Perfect Square

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प्रश्न

Find the smallest number by which 28812 must be divided so that the quotient becomes a perfect square. 

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उत्तर

Prime factorisation of 28812:
28812 = 2 x 2 x 3 x 7 x 7 x 7 x 7 

Grouping them into pairs of equal factors:
28812 = (2 x 2) x (7 x 7) x (7 x 7) x 3
The factor, 3 is not paired. Hence, the smallest number by which 28812 must be divided such that the resulting number is a perfect square is 3.

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अध्याय 1: A Squares - Exercise 3.1 [पृष्ठ ५]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 8
अध्याय 1 A Squares
Exercise 3.1 | Q 12 | पृष्ठ ५

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