If the first term of an A.P. is a and nth term is b, then its common difference – OfficerPath

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If the first term of an A.P. is a and nth term is b, then its common difference is

Subject: MathematicsTopic: Progressions

A

$$frac{{b - a}}{{n + 1}}$$

B

$$frac{{b - a}}{{n - 1}}$$

C

$$frac{{b - a}}{n}$$

D

$$frac{{b + a}}{{n - 1}}$$

Correct Answer: B

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