Q3 of 67 Page 95

A student was asked to final √961. He read it wrongly and found √691 to the nearest integer. How much small was his number from the correct answer?

√961 = 31


262 = 676 < 691 < 27 = 729


⇒ 691 is nearer to 676.


Thus, the nearest integer to is 26.


Difference = 31 − 26 = 5


∴ His number was smaller than the correct answer by 5.


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