Question

How would you answer this question?

Answer 1

n = 8

Explanation:

any term in a Fibonnacci sequence is found by adding the previous 2 terms.

that is x₃ = x₁ + x₂

using this to continue the sequence

1, 1, 2, 3, 5, 8, 13, 21, 34, 55 with a₁₀ = 55

so

x₈ + x₉ = x₁₀

compare to
`x_(n)` +
`x_(n+1)` = 55

with n = 8