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Home  >>  JEEMAIN and AIPMT  >>  Mathematics  >>  Class11  >>  Sequence and Series
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Ram shares a photo link on facebook with 3 persons and requests each of them to share with 3 more persons and continue the chain. For every share of the photo link if Rs 100 is donated to the Adyar Cancer society, what is the total amount collected by the society till the $b^{th}$ set of shares.

$\begin{array}{1 1} 729 \\ 364 \\ 36400 \\ 72900 \end{array}$

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Answer : (c) 36400
Explanation : a=1 ,r=3 ,n=6
Total amount collected =number of shares * 100
answered Jan 6, 2014 by yamini.v

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