Question

without doing any calculation find the numbers which are surely not perfect square ​

Answer 1

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.

∴ (i) 153, cannot be a perfect square.

  (ii)788, cannot be a perfect square

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