find x so that x+2,4x and 6x+1 are terms of an arithmetic sequence

solution

a 4

b 5

c 3

D 6

e none of the above

if a ,b ,c are in AP than we know that b=a+c/2 or 2b=a+c

by same application

2*4x=x+2+6x+1

8x=7x+3

8x-7x=3

x=3

solution is option C

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