Question

If the common difference of an ap is 3,find the value of a at
a17 - a12​

Answer 1

Answer:

a17-a12=15

Step by step :

d=3

a17=a1+16×3=a1+48

a12=a1+11×3=a1+33

a1+48-a1+33=15

Hope You understand ❤