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If the probability that a certain event occur is p, what is the value

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Manager
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Joined: 23 Jun 2009
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Location: Brazil
GMAT 1: 470 Q30 V20
GMAT 2: 620 Q42 V33
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If the probability that a certain event occur is p, what is the value [#permalink]

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New post 26 Sep 2016, 16:34
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71% (00:37) correct 29% (00:38) wrong based on 187 sessions

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If the probability that a certain event occur is p, what is the value of p?

(1) The probability that the event will occur is twice the probability that the event will not occur

(2) The probability that the event will not occur is less than 0.4
[Reveal] Spoiler: OA
Intern
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Joined: 11 Sep 2016
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Re: If the probability that a certain event occur is p, what is the value [#permalink]

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New post 28 Sep 2016, 21:44
How do we know what the actual value is?
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Concentration: Economics, Healthcare
GMAT 1: 690 Q42 V47
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Re: If the probability that a certain event occur is p, what is the value [#permalink]

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New post 08 Nov 2016, 07:57
Statement1 P=1-p
2p=1
p=1/2 sufficient

Statement : of course infinite values are possible.

20 sec question YAY
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Re: If the probability that a certain event occur is p, what is the value [#permalink]

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New post 26 May 2017, 04:11
If Probability that the event occurs = p
Probability that the event does not occur = 1-p

From S1: p = 2 (1-p)
or p = 2-2p
or 3p = 2
or p = 2/3

Sufficient

S2: 1- p <0.4
Hence, p >0.6
Since, p can take different values ranging from >0.6 to 1, no unique value. hence, Insufficient

Ans A
Re: If the probability that a certain event occur is p, what is the value   [#permalink] 26 May 2017, 04:11
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If the probability that a certain event occur is p, what is the value

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