Question

100 kilometers is equal to how many miles?

Answer 1

Using the Fibonacci sequence as a rough approximation:
`100 = 89 + 8 + 3` so sum `55 + 5 + 2 = 62`

Explanation:

The ratio between miles and kilometres is close to the limiting ratio between successive terms of the Fibonacci sequence.

`1,1,2,3,5,8,13,21,34,55,89,...`

So `5` miles is about `8` kilometres, `21` kilometres is about `13` miles, etc.