Konstantin Lynov wrote:
What s the numerical value of 1/a + 1/b + 1/c ?
1) a+b+c = 1;
2) abc = 1.
Solution: Let's simplify the equation first. This leads us to (bc+ac+ab)/abc;
Neither statement one, not two gives us sufficient info to find values for the given equation. Combining two statements together, we get three variables and only two equations. Thus, E is the correct answer.