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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 11 Nov 2019, 03:48
00:00
A
B
C
D
E

Difficulty:

  95% (hard)

Question Stats:

20% (02:14) correct 80% (01:33) wrong based on 70 sessions

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

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New post 11 Nov 2019, 04:52
Bunuel
Can u please help with option B
It is not understandable

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New post 11 Nov 2019, 04:55
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New post 11 Nov 2019, 05:49
case 1: assume p/2 = a
then a^a = a => a=1
--> p/2 =1 or p=2 (sufficient)

case 2: assume 2/p = a
then a^a =a => a=1
--> 2/p = 1 or p=2 (sufficient)

Ans D
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New post 11 Nov 2019, 06:30
assume P/2=X , then P=2X then option 1 can be converted to
x^x=x
x=1
then p=2
Do the same thing with option 2
Which will again give P=2.
Ans. D
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What is the value of p?  [#permalink]

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New post Updated on: 12 Nov 2019, 06:57
Bunuel wrote:
What is the value of p?

(1) \((\frac{p}{2}) ^ {(\frac{p}{2})} = \frac{p}{2}\)


(2) \((\frac{2}{p}) ^ {(\frac{2}{p})} = \frac{2}{p}\)




statement 1: As p is in numerator P can be 0 or a definite value =2 if we equate the bases so insufficient
statement 2: P is in the denominator so p not equal 0 and therefore we get a unique value on equating the bases : sufficient

therefore B

Originally posted by StrugglingGmat2910 on 11 Nov 2019, 06:57.
Last edited by StrugglingGmat2910 on 12 Nov 2019, 06:57, edited 2 times in total.
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New post Updated on: 13 Nov 2019, 01:51
StrugglingGmat2910 wrote:
Bunuel wrote:
What is the value of p?

(1) \((\frac{p}{2}) ^ {(\frac{p}{2})} = \frac{p}{2}\)


(2) \((\frac{2}{p}) ^ {(\frac{2}{p})} = \frac{2}{p}\)




statement 1: As p is in numerator P can be 0 or a definite value =2 if we equate the bases so insufficient
statement 2: P is in the denominator so p not equal 0 and therefore we get a unique value on equating the bases : sufficient

therefore B





0^0 is not defined if it is defined as in most cases 0^0 =1

Originally posted by Prateeksansanwal on 12 Nov 2019, 01:34.
Last edited by Prateeksansanwal on 13 Nov 2019, 01:51, edited 1 time in total.
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New post 12 Nov 2019, 21:30
I am not sure but for option B (-2) also satisfies the value
I think it should b E
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New post 02 Jan 2020, 02:36
+2 and -2 both satisfy both the statements. Hence, E
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New post 02 Jan 2020, 09:43
0 and 2 satisfies both the statements.
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Re: What is the value of p?   [#permalink] 02 Jan 2020, 09:43
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