Question

-1, 2 ,12, 40 what will be the next term? please reply quick

Answer 1

whats the rush?

Answer 2

0,3,13,41 if we shift it

but i dont see a pattern in it at the moment

Answer 3

3 10 28
7 18
9

not enough terms to determine it that way either

Answer 4

-1+1=0 (zero at 40)....2+2=4(4 at 40)...maybe that's some kind of the pattern...I guess not...

Answer 5

did they give u any option on this question

Answer 6

@asesde No

Answer 7

I think it would be 49

Answer 8

http://www.wolframalpha.com/input/?i=-1%2C+2%2C+12%2C+40%2C+...

Answer 9

There are lots of patterns you could fit to this sequence.
One pattern is as follows:\[a_n=(2n-1)\times2^n\]for \(n=0,1,2...,\infty\)