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The nth term of an AP is (3n + 5). Find its common difference.

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The nth term of an AP is (3n + 5). Find its common difference.

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We have

Tn = (3n + 5)

Common difference = T2 - T1

T1 = 3 x 1 + 5 = 8

T2 = 3 x 2 + 5 = 11

d = 11 - 8 - 3

Hence, the common difference is 3.

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