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

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Bunuel
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If the probability that a certain event occur is p, what is the value [#permalink] If the probability that a certain event occur is p, what is the value   19 Apr 2023, 01:30
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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


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A
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szcz
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Re: If the probability that a certain event occur is p, what is the value [#permalink] If the probability that a certain event occur is p, what is the value   19 Apr 2023, 07:14
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P(Event will occur) + P(Event will not occur) = 1
Statement 1
This statement gives a relation between both the terms needed above.
Hence statement 1 is sufficient
Statement 2
This statement gives a range so we cannot have a fixed value for p.
Not enough.
Therefore answer is option A.
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gmattyfatty
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Re: If the probability that a certain event occur is p, what is the value [#permalink] If the probability that a certain event occur is p, what is the value   24 Apr 2023, 17:28
Bunuel how do we calculate the value of P? I got the right answer but not sure if it's 60% (2/3) or 50% (1/2)
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Karan0912
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Re: If the probability that a certain event occur is p, what is the value [#permalink] If the probability that a certain event occur is p, what is the value   25 Apr 2023, 00:40
gmattyfatty wrote:
Bunuel how do we calculate the value of P? I got the right answer but not sure if it's 60% (2/3) or 50% (1/2)


It is 2/3 ie 66.7%.
It is DS que so you dont really need to calculate the exact values.
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Re: If the probability that a certain event occur is p, what is the value [#permalink]
25 Apr 2023, 00:40
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Bunuel
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