1.

The nth term of an AP is (7 - 4n). Find its common difference.

Answer»

We have

Tn = (7 - 4n)

Common difference = T2 - T1

T1 = 7 - 4 x 1 = 3

T2 = 7 - 4 x 2 = -1

d = -1 - 3 = -4

Hence, the common difference is -4.



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