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# The probability that event A occurs is p and the probability that even

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Intern
Joined: 28 Dec 2014
Posts: 9
GMAT 1: 710 Q47 V41
The probability that event A occurs is p and the probability that even  [#permalink]

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25 Jun 2017, 11:06
00:00

Difficulty:

(N/A)

Question Stats:

33% (00:56) correct 67% (08:38) wrong based on 6 sessions

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The probability that event A occurs is p and the probability that event B occurs is k. If event A and event B are independent, what is the probability that event A occurs but not event B?

(A) k-$$k^2$$
(B) $$k^2$$-k
(C) 2k
(D) $$k^2$$
(E) 2$$k^2$$

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Math Expert
Joined: 02 Aug 2009
Posts: 7688
Re: The probability that event A occurs is p and the probability that even  [#permalink]

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25 Jun 2017, 20:27
aazt wrote:
The probability that event A occurs is p and the probability that event B occurs is k. If event A and event B are independent, what is the probability that event A occurs but not event B?

(A) k-$$k^2$$
(B) $$k^2$$-k
(C) 2k
(D) $$k^2$$
(E) 2$$k^2$$

Faulty choices
_________________
Intern
Joined: 18 Apr 2013
Posts: 34
The probability that event A occurs is p and the probability that  [#permalink]

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05 Jul 2017, 09:26
1
The probability that event A occurs is p and the probability that event B occurs is k. If event A and event B are independent, what is the probability that event A occurs and not event B?
a) k-k^2
b) (k^2) - k
c) 2k
d) k^2
e) 2k^2
Manager
Joined: 02 May 2016
Posts: 77
Location: India
Concentration: Entrepreneurship
GRE 1: Q163 V154
WE: Information Technology (Computer Software)
Re: The probability that event A occurs is p and the probability that  [#permalink]

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09 Jul 2017, 07:36
Need help here.

I got Answer as p(1-k), which is nowhere mentioned in the answer choices. Don't know how to proceed further.
I get no information from "Independent events", its not that they are mutually exclusive.
What am I missing here? Any source to study this?
Intern
Joined: 28 Aug 2016
Posts: 17
GMAT 1: 560 Q44 V23
The probability that event A occurs is p and the probability that even  [#permalink]

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17 Jul 2017, 01:37
The probability that event A occurs is p and the probability that event B occurs is k. If event A and event B are independent, what is the probability that event A occurs but not event B?

A. k-(k^2)
B. (k^2)-k
C. 2k
D. k^2
E. 2k^2

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
The probability that event A occurs is p and the probability that even   [#permalink] 17 Jul 2017, 01:37
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