1. In the following question, select the missing number from the given series. ?, 5, 15, 45, 113





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  • By: anil on 05 May 2019 02.26 am
    If we reverse the series as : 113, 45, 15, 5, ? Then number of the form = $$(n^3+n)$$ are subtracted, where $$n$$ is a natural number. 113 - $$(4^3+4)$$ = 45 45 - $$(3^3+3)$$ = 15 15 - $$(2^3+2)$$ = 5 5 - $$(1^3+1)$$ = 3 => Ans - (C)
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