Is $a = 0$ ?

(1) $ab = 0$
(2) $a^2=0$

Correct answer marked below

Statement (1) ALONE is sufficient

Statement (2) ALONE is sufficient

Correct

BOTH statements TOGETHER are sufficient

EACH statement ALONE is sufficient

Statements (1) and (2) TOGETHER are NOT sufficient

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Explanation

Create a free account to reveal the correct answer, see the step-by-step explanation, and start tracking your GMAT progress.

Comments

Be the first to share your thoughts and help others understand it better.

What this question tests

Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.

Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.

Is a=0a = 0a=0?(1) ab=0ab = 0ab=0(2) a2=0a^2=0a2=0