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In a saving plan, a child saves (1) rupee on the first day and (31) rupees on the (31)st day. If the amount increases by (1) rupee daily, what is the total saving?

Answer and explanation

Correct answer: (496)

Total saving is (S_{31}=\frac{31\times32}{2}=496) rupees. A daily increase of (1) forms the sum of natural numbers.

Related tags

MathSequencesNatural-NumbersSumSum Of First N Natural NumbersSequences And ProgressionsMathematicsClass 9 Mcq

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