Question

Hey..

Class 10

Chapter : Arithmetic Progression

The nth term of an AP is 7 - 4n. Find its common difference.
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Answer 1

Answer:

an = 7-4n

a1 = 7-4(1) = 7-4 = 3

a2 = 7-4(2) = 7-8 =-1

d = a2-a1 = -1-3 = -4