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

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

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New post 01 Nov 2018, 05:01
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

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

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Re: Is a = 0? (1) ab = 0 (2) a^2 = 0  [#permalink]

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New post 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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Is a = 0? (1) ab = 0 (2) a^2 = 0  [#permalink]

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New post 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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