SOLUTION: 1,1,2,3,5,8,?,21 What comes in the question mark space

Algebra ->  Sequences-and-series -> SOLUTION: 1,1,2,3,5,8,?,21 What comes in the question mark space      Log On


   

Question 1088057: 1,1,2,3,5,8,?,21
What comes in the question mark space
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39618) About Me  (Show Source):
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.
Fibonaci numbers.

https://en.wikipedia.org/wiki/Fibonacci_number