2 (+4) --> 6 6 (-3) --> 3 3 (+5) --> 8 8 (-2) --> 6 6 (+6) --> 12 The next number would have been 12 (-1) --> 11 ===============
20
11
The number that comes next in the series 1 2 2 5 3 10 is 7. You get this number by subtracting the number 3 from the number 10.
If you mean: 12, 11, 9, 6, 2 then the next number is -3 Because they are being reduced by 1, 2, 3, 4 and then 5
30 is the next number. Times 3, then minus 2.
33
4
7.
11
240
The next is 3.