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Six billiard balls, numbered 1 through 6,
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23 Sep 2019, 04:56
23 Sep 2019, 04:56
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Question Stats:
49% (00:44) correct
50% (00:57) wrong based on 97 sessions
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Six billiard balls, numbered 1 through 6, are placed in a box. Three of the balls are red, and three are blue. One ball is to be drawn randomly from the box.
A)Quantity A is greater.
B)Quantity B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The probability that the ball drawn will be an even numbered red ball |
.5 |
A)Quantity A is greater.
B)Quantity B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Re: Six billiard balls, numbered 1 through 6,
[#permalink]
23 Sep 2019, 05:02
23 Sep 2019, 05:02
My Q:
1- In Q A, I thought of it:
- the even red balls could be ( 3,0,2,1). So, I thought of dealing with it like " or". So, we can add : .5+.33+.667- .5*.33*.667=1.387 ( approximately ) here above 1 there is something wrong.
The answer and Justification from MGRE that the answer is D : that we don't have exact and detailed information.
Moreover, if the question wants need " or " or " and " will it mentioned clearly or not necessary ?
1- In Q A, I thought of it:
- the even red balls could be ( 3,0,2,1). So, I thought of dealing with it like " or". So, we can add : .5+.33+.667- .5*.33*.667=1.387 ( approximately ) here above 1 there is something wrong.
The answer and Justification from MGRE that the answer is D : that we don't have exact and detailed information.
Moreover, if the question wants need " or " or " and " will it mentioned clearly or not necessary ?
Re: Six billiard balls, numbered 1 through 6,
[#permalink]
24 Sep 2019, 01:00
24 Sep 2019, 01:00
1
Expert Reply
Not a good question to practice as also is backed up here https://math.stackexchange.com/question ... y-bayesian
Find other sources to practice on the board https://gre.myprepclub.com/forum/search.ph ... tag_id=238
Regards
Find other sources to practice on the board https://gre.myprepclub.com/forum/search.ph ... tag_id=238
Regards
