Question

2x, x+10,3x+2 are in AP. find the value of x ?

Answer 1

2x,x+10,3x+2
A2-A1
x+10-2x = -x+10
A3-A2
3x+2-x-10 = 2x -8
D1=D2
-x+10=2x -8
3x-18=0
so, x=6
AP= 12,16,20

Answer 2

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