Question

The 7th term of an AP is -1 and its 16

th term is 17. Then nth

term of the AP is​

Answer 1

Answer:

substitute 1 in 2

and u will get it

Step-by-step explanation:

2n-15 is the nth term

Answer 2

Step-by-step explanation:

T7 = a+ 6d

-1= a+ 6d ........(1)

and

T16= a+ 15d

17 = a+ 15d ........(2)

On solving equation (1) and (2)

9d= 18

d= 2

Put value in equation (1)

a= -13

Now

Tn = -13 + (n-1) 2

= -13+2n-2

=2n-15

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