Question

In an AP if nth term is 7 -4n,then its d is

Answer 1

Answer:

d=-4

Step-by-step explanation:

an=7-4n

n=1=7-4=3

n=2=7-4*2=7-8=-1

n=3=7-4*3=7-12=-5

3,-1,-5.....

a1=3,a2=-1,a3=-5

a2-a1=-1-3=-4

a3-a2=-5+1=-4

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