Question

What is the common difference in the arithmetic progression $2,7,12,17,...$?

• A. $6$
• B. $5$
• C. $7$
• D. $9$

Answer 1

Answer: (B)

$5$

The common difference in the arithmetic progression $2,7,12,17,...$ is the difference between its two consecutive terms.

The difference between its two consecutive terms here is $7-2=5$, or $12-7=5$ and so on.

Thus, the common difference is $5$.