Question

if 3rd term of an AP is 5 and 7th term is 13,then its common difference is ​

Answer 1

a3=5

a+2d=5...(1)

a+7d=13

a+6d=13...(2)

subtracting the equations we get

-4d=-8

d=2

hope you will get

Answer 2

Answer:

common difference=+002

Step-by-step explanation:

given:

3rd term=a+2d i.e a+2d=5.....(1)

7th term=a+6d i.e a+6d=13....(2)

solving (1) n (2)..,

we get..,

-4d=-8

i.e...d=2..(required answer)