If you eliminate the first number, the rest are prime and the next one would be 29.
What
If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
The pattern is plus 7. So the next number used to be 1.
11
11
89.
prime numbers - next number is 13
eight
What would be the next number in this series 15 12 13 10 11 8?
13
13.
The pattern is - 5 then +2. 2 and 4 are the next numbers in the series.
If you mean: 1 2 3 5 8 13 then the next number is 8+13 = 21
the next number is 5 and the one after that is 15
If you mean: 1 1 2 3 5 8 13 21 then the next number is 13+21 = 34
The pattern is plus 7. So the next number used to be 1.
11
11