Question

what is the difference between 3rd and the 8 th term of the AP if AP are 3 ,7, 11 and 15​

Answer 1

Answer:

Given:

A.P.:3,7,11,15....

a=3,d=4

to find=a8-a3

an=a+(n-1)d

a3=3+(3-1)4

=3+(2)4

=3+8

a3=11

a8=a+(n-1)d

=3+(8-1)4

=3+(7)4

=3+28

=31

difference=a8-a3

=31-11

=20