The next Fibonacci number in the sequence is 34.
In the Fibonacci sequence, each number is the sum of the two preceding ones. Starting with 1 and 1, the sequence progresses as follows:
- 1 (first number)
- 1 (second number)
- 1 + 1 = 2 (third number)
- 1 + 2 = 3 (fourth number)
- 2 + 3 = 5 (fifth number)
- 3 + 5 = 8 (sixth number)
- 5 + 8 = 13 (seventh number)
- 8 + 13 = 21 (eighth number)
Continuing this pattern, the next number can be found by adding the last two numbers in the sequence:
13 (seventh number) + 21 (eighth number) = 34 (ninth number).
Thus, the answer is 34.