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What would be the square root of 961?

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in Mathematics – Class 8 by (91.0k points)
What would be the square root of 961?

(a) 31

(b) 32

(c) 39

(d) 36

This question was posed to me in an interview for job.

This intriguing question originated from Square Root in chapter Squares and Square Roots of Mathematics – Class 8

1 Answer

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Best answer
The correct choice is (a) 31

Explanation: Since the square is ending with 1 its root has to end with either 1 or 9. So two options are ruled out and the other two are 31 & 39. When we calculate the square root we find that the square root of 961 is 31. Hence 31 is the correct answer and all others are incorrect.

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