Braingle Lite



4, 12, 84, ...

Category:Series
Submitted By:bluelightnign
Fun:*** (2.25)
Difficulty:**** (3.1)



What is the next number in this series?

4, 12, 84, 3612....

Show Hint Show Answer



Comments on this teaser


Posted by stm8r111/14/02
Ouch. Good one!

Posted by cnmne03/20/04
Another formula: y = x * ((x/2) + 1).

Posted by Gerrard1001/09/08
pretty hard!!!!! :D :o

Posted by javaguru03/08/09
I did it like cnmne. Not really that hard, don't know why this is rated so difficult.




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