Question

Without doing calculation, find the number which is surely not perfect square. 1)153
2)257,,,,,3)408​

Answer 1

(iii) 408, cannot be a perfect square. (iv) 441, can be a perfect square. Thus, (i) 153, (ii) 257 and (iii) 408 are surely not perfect squares.

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Answer 2

Answer:

all the best for your exam dear