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

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Joined: 01 Sep 2010
Posts: 3408
Is a = 0? (1) ab = 0 (2) a^2 = 0  [#permalink]

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01 Nov 2018, 05:01
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Difficulty:

5% (low)

Question Stats:

95% (00:24) correct 5% (00:29) wrong based on 48 sessions

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Is a = 0?

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

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Joined: 09 Jun 2018
Posts: 185
Location: United States
GPA: 3.95
WE: Manufacturing and Production (Energy and Utilities)
Re: Is a = 0? (1) ab = 0 (2) a^2 = 0  [#permalink]

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01 Nov 2018, 05:43
Stmt 1: a can be 0 or b can be 0, Hence Insuff. Eliminate A,D
Stmt 2: a has to be 0, Suff

Hence Option B
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Joined: 24 Oct 2016
Posts: 535
GMAT 1: 670 Q46 V36
GMAT 2: 690 Q47 V38
Is a = 0? (1) ab = 0 (2) a^2 = 0  [#permalink]

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01 Dec 2018, 13:24
carcass wrote:
Is a = 0?

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

Stmt 1:
Don't know anything about B. Not sufficient!

Stmt 2:
a = 0. Sufficient!

Therefore, Ans = B
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Is a = 0? (1) ab = 0 (2) a^2 = 0   [#permalink] 01 Dec 2018, 13:24
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