Question

How to solve this Number series question?
20 8 6 1 ?

Answer 1

Answer:

Types of Sequence and Series

Arithmetic Sequences. Geometric Sequences. Harmonic Sequences. Fibonacci Numbers.

Answer 2

Answer:

$\frac{20}{2} = 10 - 2 = 8 \\ \frac{8}{2} = 4 + 2 = 6 \\ \frac{6}{2} = 3 - 2 = 1 \\ \frac{1}{2} = 0.5 + 2 = 2.5$