Without doing any calculation, find whether number is perfect square or not 257.
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Without doing any calculation, find whether number is perfect square or not 257.
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Answer:
No it is not the perfect square
Answer:
We know that the ending digit of perfect square is 0, 1, 4, 5, 6, and 9.
∴ A number ending in 2, 3, 7 or 8 can never be a perfect square.
∴ 257, cannot be a perfect square.