Question
7Â Â Â Â Â 14Â Â Â Â Â 42Â Â Â Â Â 168Â Â Â Â Â
 840     ? Find the missing term (?) in the following number series.Solution
7 x 2 = 14 14 x 3 = 42 42 x 4 = 168 168 x 5 = 840 840 x 6 =Â 5040
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