Which of the following numbers are not perfect squares? Class 8

Which of the following numbers are not perfect squares? Class 8

Question 1.

Which of the following numbers are not perfect squares? Class 8

(i) 2032

(ii) 2048

(iii) 1027

(iv) 1089

Solution:

(i) No

(ii) No

(iii) No

(iv) Yes.

Question 2.

Which one among 64², 108², 292², 36² has last digit 4? Class 8

Solution:

108² and 292² have last digit 4.

Question 3.

Given 125² = 15625, what is the value of 126²? Class 8

(i) 15625 + 126

(ii) 15625 + 26²

(iii) 15625 + 253

(iv) 15625 + 251

(v) 15625 + 51²

Solution:

(iv) 15625 + 251