Question

If the 4th term of an A.P is 11 and sum of 4th and 5th term is 25. Find the common difference?​

Answer 1

`3`

Explanation:

4th term+5th term =
`25`

5th term =
`x`

4th term =
`11`

`11+x=25`

`x=25-11`

`x=14`

5th term=
`14`

Common difference = 5th term - 4th term

`14-11`

`=3`