Squares and Square Roots-Sample Questions

1.   A perfect square number can never have the digits ... at the units place.

2.   Find

3.   Find the value of (23)² using column method.

4.   Find the value

5.   Write a Pythagorean triplet whose smaller member is 6.

6.   What is the sum of first n odd natural numbers?

7.   A number ending in an odd number of zeros is never a

8.   If m, n, p are natural numbers such that

          (m² + n²) = p², then (m, n, p) is called

9.   Express 49 as the sum of seven odd numbers.

10.   Without adding, find the sum.

          (1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17)

11.   Find the value of

12.   Write the unit digit of square of 799.