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The nth term of an AP is $a_{n} = 3 n + 1$ . What is its common difference?

Class 10nth Term of an APAlgebra — Sequences

A2
B6
C4
D3

Step-by-Step Solution

When

a_{n} = 3 n + 1

, the coefficient of

n

is the common difference, so

d = 3

. (Check:

a_{1} = 4, a_{2} = 7

, difference 3.)

Answer: D) 3

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