Question

If 3,15,27,39 is an A.P , then the nth term is

Answer 1

Step-by-step explanation:

nth term will be

3+(n-1)12

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Answer 2

Answer:

Given:

The series of an AP is,

3,15,27,39,.......

Here,

a=First term=3

common difference,d=a2-a1=15-3

d=12

So,

nth term=a+(n-1)d

an=3+(n-1)12

an=12n-9