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What is obtained by subtracting the sum of the first (62) natural numbers from the sum of the first (67) natural numbers?

Answer and explanation

Correct answer: 325

When the sum of the first 62 natural numbers is subtracted from the sum of the first 67 natural numbers, only the terms from 63 to 67 remain. Thus, \(63+64+65+66+67=325\). Hence, option B is correct. A value of 315 would result from an incorrect addition of these terms. Exam tip: the difference of two consecutive partial sums equals the sum of the intervening terms.

Related tags

MathematicsSequences And ProgressionsNatural NumbersPartial SumsArithmetic SeriesSum Of First N Natural NumbersClass 9 Mcq

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