Question

the 7th term and 10th term of ap is 12 and 25 find the 12th term​

Answer 1

Step-by-step explanation:

Let a is first term and d is common difference.

Given 7th term=a+6d=12 eq..... 1

10 th term =a+9d=25eq.....2

eq....2-eq.....1

a+9d=25

-a-6d=-12

= 3d= 13

d=13/3put d value in eq... 1

We get a=12-26

a=-14

Then 12th term is

a+11d= - 14+11×13/3=33.66