Question

Which one is the geometric sequence.

Answer 1

Answer:

C

Step-by-step explanation:

A geometric sequence has a common ratio r between consecutive terms

A

4 ÷ 2 = 2

6 ÷ 4 = 1.5

Thus not a geometric sequence

B

1 ÷ 1 = 1

2 ÷ 1 = 2

Thus not a geometric sequence

C

$\frac{1}{2}$ ÷ 1 = $\frac{1}{2}$

$\frac{1}{4}$ ÷ $\frac{1}{2}$ = $\frac{1}{2}$

$\frac{1}{8}$ ÷ $\frac{1}{4}$ = $\frac{1}{2}$

D

4 ÷ 7 = $\frac{4}{7}$

1  ÷ 4 = $\frac{1}{4}$

Thus not a geometric sequence

Then the geometric sequence is C