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Question

Find the least number that must be added to 1729 to get a perfect square.

A
35
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B
48
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C
30
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D
42
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Solution

The correct option is A 35
Applying the division method:
414172916 81 129 81 48

Now, 422 = 42 x 42 = 1764

1764 - 1729 = 35

Hence, the perfect square is 35 more than 1729. So, 35 is the least number that must be added to 1729 to get a perfect square.

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