Question

A _______ is a progression formed by taking the reciprocals of an arithmetic progression.

• A. geometric progression
• B. arithmetic series
• C. arithmetic progression
• D. harmonic progression

Answer 1

The correct option is D harmonic progression

A harmonic progression is a progression formed by taking the reciprocals of an arithmetic progression.

For example: $3,5,7,....$ is in arithmetic progression. Here $2$ is the common difference.
Thus $\frac{1}{3},\frac{1}{5},\frac{1}{7}....$ is in harmonic progression.