Question

The nth term of an A.P is given by 12n – 5. If there are 100 terms in the AP find its last term.​

Answer 1

Answer:

1195

Step-by-step explanation:

if nth term=12n-5

and there are 100 terms in the ap, therefore the last term is the 100th term.

Therefore the 100th term of the ap =12*100-5

=1200-5

=1195

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Answer 2

Step-by-step explanation:

N=100

Putting n=1,2,3... In the general A. P

WE GET

7,19,31,.......

So difference is d=12

Now

We will find the last term called a100

A100=7+99(12)

A100=1195