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If yz = 6, what is the value of yz(y + z) ?

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If yz = 6, what is the value of yz(y + z) ? [#permalink]

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New post 10 Dec 2017, 01:14
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A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

77% (00:40) correct 23% (00:54) wrong based on 31 sessions

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If yz = 6, what is the value of yz(y + z) ? [#permalink]

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New post 10 Dec 2017, 03:40
Bunuel wrote:
If yz = 6, what is the value of yz(y + z) ?

(1) y^2 = 9
(2) z^2 = 4


Statement 1: \(y=3\) or \(-3\) so \(z=2\) or \(-2\). Hence multiple values of \((y+z)\) possible. Insufficient

Statement 2: \(z=2\) or \(-2\) so \(y=3\) or \(-3\). Hence multiple values of \((y+z)\) possible. Insufficient

Combining 1 & 2 we can have multiple values of \((y+z)\). Insufficient

Option E
If yz = 6, what is the value of yz(y + z) ?   [#permalink] 10 Dec 2017, 03:40
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