9
14
17?
The next number in the sequence is 15. The pattern is as follows: from 1 to 6 is +5, from 6 to 9 +4, from 9 to 12 +3, from 12 to 14 +2, and then from 14 to the answer (15) +1.
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
The next number in the sequence is 15 - the sequence goes x2, +2, -1
14
17?
15
The next number in the sequence 3-15-6-30-21 is -207.
The next number in the sequence is 15. The pattern is as follows: from 1 to 6 is +5, from 6 to 9 +4, from 9 to 12 +3, from 12 to 14 +2, and then from 14 to the answer (15) +1.
The next number could be 26 The next number could be 12 - - - - - - - - - The next number that is in the sequence is 12.
The next number in the sequence is 15 - the sequence goes x2, +2, -1
21
15
The sequence of differences between consecutive numbers is 9, 1, -20, 9, 1. If this continues then the next difference is -20 and therefore the seventh number is -5. (15 - 20).
The sequence of differences between consecutive numbers is 9, 1, -20, 9, 1. If this continues then the next difference is -20 and therefore the seventh number is -5. (15 - 20).
are you sure it is not1 2 3 6 8 7 14 16because that sequence doubles for the first one, then adds two for the next number, then subtracts one for the third, then repeats. So the next number is 15.