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Question

1+31+32+33..........+32999 =


A

5299912

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B

3300012

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C

3299912

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D

4199912

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Solution

The correct option is B

3300012


The given series is a GP with first term a=1 and the common ratio r=t2t1=31=3.

The sum to n terms of the GP is given by
Sn=a(rn1)r1 , where r>1.

1+31+32+33..........+32999=1(330001)31

=(330001)2


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