Question

Identify the geometric progression.

• A. $1,3,5,7,9,...$
• B. $2,4,6,8,\mathrm{10...}$
• C. $5,10,15,25,\mathrm{35..}$
• D. $1,3,9,27,\mathrm{81...}$

Answer 1

Answer: (D)

$1,3,9,27,\mathrm{81...}$

A geometric sequence is a sequence of numbers such that the quotient of any two successive members of the sequence is a constant called the common ratio of the sequence.
So, $1,3,9,27,\mathrm{81...}$ is a geometric progression.
Here the common ratio is $3$.