Question

the following numbers are not perfect squares. give reasons? please answer quickly

Answer 1

Answer:

(I)257

a number to be a perfect square should always have 1,4,5,6,9(one of these) in the ones place .

since 257 has 7 at ones place it is not a perfect square

(ii)4592

a number to be a perfect square should always have 1,4,5,6,9(one of these) in the ones place .

since 4592 has 2 at ones place it is not a perfect square.

Answer 2

Step-by-step explanation:

Since the unit digits is 7 and 2.

A perfect square never ends in 2, 3, 7 or 8.