Question

If 2x, x+10,3 x+2 are in A.P. then x is
a)0
b) 2
c) 4
d) 6​

Answer 1

Answer:

x = 6

Step-by-step explanation:

Series

2x,x+10,3x+2

Common difference, d = x+10-2x = 10-x

and 3x+2-x-10 = 2x-8

Commin difference should be same for an AP

Hence,

10-x = 2x-8

18 = 3x

x = 18/3 = 6

AP is 12,16,20 with common difference of 4