GRE Question of the Day (November 8)

\({a^3b^4c^7>0}\)

Which of the following statements must be true?

Indicate [u]all[/u] such statements.

A. \({ab}\) is negative

B. \({abc}\) is positive

C. \({ac}\) is positive

Correct Answer - C - (click and drag your mouse to see the answer)