Question

Find the least number which must be added to 7900 to obtain a perfect square?

Answer 1

Let’s find the √7900 by long division method

We get the remainder as 156

Hence 882 < 7900

The next perfect square is 892 = 7921

The number to be added is 7921 – 7900 = 21

Therefore 21 is added to 7900 to make it a perfect square.

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Answer 2

Step-by-step explanation:

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