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What is the value of p?

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Bunuel
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What is the value of p? [#permalink] New post   20 Dec 2015, 05:14
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E

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81% (00:40) correct 19% (00:45) wrong based on 420 sessions
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What is the value of p?

(1) –|p| = −2
(2) p^2 – 4 = 0
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E
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Re: What is the value of p? [#permalink] 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] 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] New post   01 Sep 2020, 00:06
Bunuel
Can you please help me to understand what happens when we combine both the statements ?
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Re: What is the value of p? [#permalink] New post   01 Sep 2020, 03:17
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shameeh wrote:
Bunuel
Can you please help me to understand what happens when we combine both the statements ?


\(What is the value of p?\)

(1) –|p| = −2:

|p| = 2. So, p = 2 or p = -2. Two different answers. Not sufficient.


(2) p^2 – 4 = 0:

p^2 = 4. So, p = 2 or p = -2. Two different answers. Not sufficient.

(1)+(2) Even when combining, p = 2 or p = -2. Two different answers. Not sufficient.

Answer: E.
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Re: What is the value of p? [#permalink]
01 Sep 2020, 03:17
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Bunuel
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