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# Is the probability of an element in Set B also being an elem

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Intern
Joined: 14 Jun 2011
Posts: 16
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Kudos [?]: 63 [1] , given: 25

Is the probability of an element in Set B also being an elem [#permalink]

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28 Dec 2012, 05:50
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Difficulty:

55% (hard)

Question Stats:

62% (02:18) correct 38% (01:08) wrong based on 93 sessions

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Is the probability of an element in Set B also being an element in Set A equal to the probability of an element in Set A also being an element in Set B?

(1) Set A consists of all integers from 1 through 5 and Set B consists of all prime numbers less than 10.

(2) Set A consists of all odd numbers between 1 and 10, both inclusive, and Set B consists of all even numbers between 1 and 10, both inclusive.

Cheers,
Taz
[Reveal] Spoiler: OA

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Last edited by tabsang on 28 Dec 2012, 07:18, edited 1 time in total.
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GMAT 1: 700 Q48 V37
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Kudos [?]: 210 [3] , given: 23

Re: Is the probability of an element in Set B also being an elem [#permalink]

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28 Dec 2012, 05:58
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I think the answer is D, but this isn't a GMAT question at all, each statement claims something totally different, on the GMAT the statements never contradict each other.
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Kudos [?]: 4 [1] , given: 3

Re: Is the probability of an element in Set B also being an elem [#permalink]

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28 Dec 2012, 08:34
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(1) Gives us all the elements in set A and B. Sufficient.

(2) Gives us all the elements in set A and B. Sufficient.

D should be correct.

Although I agree with the person above, this wouldn't appear on the gmat.
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Kudos [?]: 79 [0], given: 13

Re: Is the probability of an element in Set B also being an elem [#permalink]

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17 Jul 2014, 01:15
tabsang wrote:
Is the probability of an element in Set B also being an element in Set A equal to the probability of an element in Set A also being an element in Set B?

(1) Set A consists of all integers from 1 through 5 and Set B consists of all prime numbers less than 10.

(2) Set A consists of all odd numbers between 1 and 10, both inclusive, and Set B consists of all even numbers between 1 and 10, both inclusive.

Cheers,
Taz

HI Bunuel,

I am using A = {1,2,3,4,5} B = {2,3,5,7}.
How the probability can be same.

Thanks
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Kudos [?]: 106080 [0], given: 11607

Re: Is the probability of an element in Set B also being an elem [#permalink]

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17 Jul 2014, 08:58
PathFinder007 wrote:
tabsang wrote:
Is the probability of an element in Set B also being an element in Set A equal to the probability of an element in Set A also being an element in Set B?

(1) Set A consists of all integers from 1 through 5 and Set B consists of all prime numbers less than 10.

(2) Set A consists of all odd numbers between 1 and 10, both inclusive, and Set B consists of all even numbers between 1 and 10, both inclusive.

Cheers,
Taz

HI Bunuel,

I am using A = {1,2,3,4,5} B = {2,3,5,7}.
How the probability can be same.

Thanks

This is a very poor quality question because the statements contradict each other. Don't waste your time on it.
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Re: Is the probability of an element in Set B also being an elem   [#permalink] 17 Jul 2014, 08:58
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