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Question

Which one of the following can't be the square of natural number?

A
1936
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B
2452
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C
1369
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D
6561
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Solution

The correct option is B 2452
As we know that all the perfect square number ends with 1,4,9,6,5,00
2452 is not a perfect square because it ends in 2.
Also1936=(44)21369=(37)26561=(81)2

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