A Fibonacci sequence begins
1, 1, 2, 3, 5, 8, ...
a) What is the 7th number in the sequence?
b) What is the 9th number in the sequence?

Respuesta :

Answer: 13

Step-by-step explanation:

You keep adding the previous two numbers and you get the next so for this you would do 5 + 8 which is 13