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# Ex.6.1 Q2 Squares and Square Roots Solutions - NCERT Maths Class 8

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## Question

The following numbers are obviously not perfect squares. Give reasons.

(i) $$1057$$

(ii) $$23453$$

(iii) $$7928$$

(iv) $$222222$$

(v) $$64000$$

(vi) $$89722$$

(vii) $$222000$$

(viii) $$505050$$

Video Solution
Squares And Square Roots
Ex 6.1 | Question 2

## Text Solution

What is known?

Numbers whhich are perfect square

What is unknown?

Why these number are not perfect square

Reasoning:

The square of a number has  $$0,1,4,5,6$$ or $$9$$ at its unit’s place are perfect squares.

Also, square of a number can only have even number of zeros at the end.

Steps:

In the above question unit digit of numbers are $$7, 3, 8, 2, 000, 2, 000, 0$$ respectively, so these number are obviously not perfect square.

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