Question

For what value of k will k+9,2k-1and2k+7 are th e consecutive terms of an ap?

Answer 1

use method 2b=a+c
Here a=first value b=2nd value And c= third value

Answer 2

as k+9,2k-1,2k+7 are in ap
2(2k-1)=k+9+2k+7
4k-2=3k+16
k=18