Question

Without doing any calculation, find the numbers which are surely not perfect squares.
(i) 153 (ii) 257 (iii) 408 (iv) 441

Answer 1

Answer:

153,257,408 are not perfect squares only 441 is a perfect square

Step-by-step explanation:

Perfect squares never end with 2,3,7,8 at its unit place

here 153,257,408 ends with 3,7,8 so they are not perfect squares.

Hope it helps...