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Instructions
What will come in place of the question mark (?) in the given number series?
Solution
Numbers of the form $$(n + n^3)$$ are added.
5 $$+ 1 + 1^3$$ = 7
7 $$+ 2 + 2^3$$ = 17
17 $$+ 3 + 3^3$$ = 47
47 $$+ 4 + 4^3$$ = 115
115 $$+ 5 + 5^3$$ = 245
=> Ans - (B)
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