Question

Find the 15th term of the A.P. with the second term by 11 and common difference 9.

Answer 1

15 term=128
It helps you to do other problems

Answer 2

given 2nd term equal to 11

and common difference=9

so,
a+d=11
a+9=11
a=11-9
a=2

Now the 15th term=a+14d
2+14×9
2+126
= 128

hope it will help you