Question

In an A.P 17th term is $7$ more than its 10th term. Find the common difference.

Answer 1

In A.P

17 th term $:a+(n-1)d$

$=a+(17-1)d$

$=a+16d$

10th term $=a+(n-1)d$

$=a+(10-1)d$

$=a+9d$

from questions

$a+9d+7=a+16d$

$\therefore 7=7d$

$\therefore d=1$

common difference = 1