Which one number when placed at the sign of interrogation shall complete the series
3, 6, 18, 72, ...?..., 2160
Consecutive natural numbers are multiplied.
3 $$\times2$$ = 6
6Â $$\times3$$ =Â 18
18Â $$\times4$$ =Â 72
72Â $$\times5$$ =Â 360
360Â $$\times6$$ =Â 2160
=> Ans - (D)
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