Answers

2014-03-02T14:59:09+05:30
A+3d = 3a 
a+6d = 2(a+2d)+1 
d = 2a/3 
a+6d = 2a + 4d +1 
a+1 = 2d 
d = (a+1)/2 
(a+1)/2 = 2a/3 
2a/3 - a/2 = 1/2 
a/6 = 1/2 
a = 3 
d = 2 
1 2 1