Bunuel wrote:
If \(|a - b| = |b - c| = 2\), what is the value of \(|a - c|\)?
(1) \(a \lt b \lt c\)
(2) \(c - a \gt c - b\)
my approach:
We can also write this question as:"if the distance between a and b, and, b and c is 2 then what is the distance between a and c ?"
1) if a < b < c then this is an arithmetic series with common difference 2. Which is a,b,c = a, a+2, a+4 thus the distance between a and c is 4. ===sufficient
2) if c-a > c-b (which is a < b) then c could be c= b+2 = a+4 or c= b-2 = a) ===insufficient
Answer A
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57% (01:18) correct 
