What number comes next in this series 3 2 6 4 9 6 12 8?

Answer 1

15.

You need to first find both patterns.

from 3 to 2 to 6 is: -1, +4

from 6 to 4 to 9 is: -2, +5

from 9 to 6 to 12 is: -3, +6

from 12 to 8 to .... is: -4, ....

Now that you can see the pattern (-1, -2, -3 and +4, +5, +6) you can

apply it to the next number