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  1. Which one of the following numbers is not a square of any natural number ?
    1. 17956
    2. 18225
    3. 63592
    4. 53361
Correct Option: C

√18225 = 135,
√17956 = 134
√63592 = 252.17
In a perfect square number 2 never comes at the unit's place.


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