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What is the value of p?

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What is the value of p?  [#permalink]

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New post 20 Dec 2015, 05:14
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (00:40) correct 12% (00:37) wrong based on 177 sessions

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Re: What is the value of p?  [#permalink]

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New post 20 Dec 2015, 05:34
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(1) –|p| = −2
=>|p| = 2
p can be 2 or - 2
Not sufficient

(2) p^2 – 4 = 0
=> p^2 = 4
p can be 2 or - 2
Not sufficient

Answer E
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Re: What is the value of p?  [#permalink]

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New post 06 Mar 2018, 04:09
Bunuel wrote:
What is the value of p?

(1) –|p| = −2
(2) p^2 – 4 = 0


Q: p = ?

St 1 : –|p| = −2

Cancelling negative sign we get |p| = 2

as |p| is an absolute value, it has two values = 2 & -2. Not sufficient

St 2 : p^2 - 4 = 0

p^2 = 4

It has two solutions, p = 2 & -2 Not sufficient

Combining we will get p = 2 & -2. Not sufficient

E
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Re: What is the value of p?   [#permalink] 06 Mar 2018, 04:09
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