Correct option is B
Wrong number = 18
Pattern of series –
6 ×1=6
6 ×2= 12
12 ×3=36
36 ×4=144
144 ×5=720
720 ××6=4320
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Question
Find the wrong number in the following number series.
6, 6, 18, 36, 144, 720, 4320
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