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If a perfect square ends with 1 then the square root can be ending with ___ & ___(a) 9 & 2(b) 9 & 1(c) 1 & 8(d) 1 & 2This question was posed to me in homework.The doubt is from Finding Square Roots topic in portion Squares and Square Roots of Mathematics – Class 8

Answer»

The correct choice is (b) 9 & 1

Easy explanation: When a perfect square ends with 1 its roots can be EITHER ending with 1 or ending with 9. HENCE the OPTIONS other the 9 & 1 are INCORRECT.



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