Q2 of 40 Page 1

The common difference of an AP, whose nth term is an = (3n + 7), is

an = 3n + 7

a1 = 3 × 1 + 7 = 10


a2 = 3 × 2 + 7 = 13


d = a2 – a1 = 13 – 10 = 3

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