What is the 9th number in the Fibonacci sequence?

The 9th number in the Fibonacci sequence is 34.

To understand how we arrive at this number, let’s first look at how the Fibonacci sequence is generated. The sequence starts with two numbers, 0 and 1. Every subsequent number is the sum of the two preceding ones.

Here’s how the sequence unfolds:

1. 1st: 0
2. 2nd: 1
3. 3rd: 0 + 1 = 1
4. 4th: 1 + 1 = 2
5. 5th: 1 + 2 = 3
6. 6th: 2 + 3 = 5
7. 7th: 3 + 5 = 8
8. 8th: 5 + 8 = 13
9. 9th: 8 + 13 = 21
10. 10th: 13 + 21 = 34

Therefore, when counting through the sequence, we see that the 9th number is indeed 34.