Question

If an arithmetic progression satisfies U4=7 , U8=15 .Find U10​

Answer 1

U10 = 19

Explanation:

The sequence is
`Ux=(x*2)-1`

x is the coefficient to U.

So,
`U10=(10*2)-1`

Which means
`U10=20-1`

Which means
`U10=19`

And there is your answer.

Hope this helps. Have a nice day.