What should be the next number in the following series? 1 2 8 48 384

asked Jan 1, 2017 177k views

3 votes

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4 votes

1
1 · 2 = 2
2 · 4 = 8
8 · 6 = 48
48 · 8 = 384
384 · 10 = 3840
3840 · 12 = 46080
46080 · 14 = 645120
...

$a_1=1;\ a_n=a_(n-1)\cdot(2n-2)$

PhoebeB answered Jan 8, 2017

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