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nth term of the series will be
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a
3n+15n−1
b
3n−15n
c
3n−25n−1
d
3n+25n−1
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Correct option is C
The given series is clearly an AG, the corresponding AP is 1+4+7+10+… having nth term = 3n−2.and corresponding GP is 1+15+152+… having nth term =15n−1Hence, required nth term of the series is 3n−25n−1.Similar Questions
The positive integer n for which is
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