1.

If 2x,x+10,3x+2 are in AP. Find the value of x

Answer» In this ap , d= a2-a1----(1)d=a3-a2--------(2)From eq. 1and 2a2-a1=a3-a2x+10-(2x)=3x+2-(x+10)x+10-2x=3x+2-x- 10-x+10=2x-810+8=2x+x18=3x x=6
Put formula 2b=a+c
X=6


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