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financeguy
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Barrons CAT Question 11 Sep 2007, 19:13
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A question barrons CAT test. Please ignore selected answer.



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GMATBLACKBELT
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Barrons CAT Question 11 Sep 2007, 19:26
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financeguy
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Ah ok. lol I was like what the heck is this??? How can answer be 10?


You want the probability of blue or yellow

S1: gives us only the probability of the yellow marbles.

This gives us the probability of blue or green... which is 7/10

Use the 1-x trick. 1-3/10=7/10. 1 is the total probability. (probability of picking any marble is 1.)

S2: gives us the probability of the green marble.

1-2/10 =8/10. We have 8/10 chance of getting a blue or yellow marble.


Ans B.
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Barrons CAT Question 11 Sep 2007, 20:01
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GMATBLACKBELT
financeguy
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Ah ok. lol I was like what the heck is this??? How can answer be 10?

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I still don't know what is 10?? :)
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Barrons CAT Question 11 Sep 2007, 20:29
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financeguy
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B

lol, the corresponding number is the probability that we will get the problem right and still be confused by the number next to the letter we chose after looking at it on five separate occasions.
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Barrons CAT Question 11 Sep 2007, 21:17
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defenestrate
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A question barrons CAT test. Please ignore selected answer.

B

lol, the corresponding number is the probability that we will get the problem right and still be confused by the number next to the letter we chose after looking at it on five separate occasions.
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:-D
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Barrons CAT Question 11 Sep 2007, 22:26
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its good entertainment. now i understand why you posted.

DS and PS in the same question.

thanks for the good fun!!! ohahahahahahohohohohohuhuhuhhehehehihihiihii.

oh i can not stop myself laughing. good stuff for fun. keep it up.

do not trash it. bring it up here to refresh the members.
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Barrons CAT Question 11 Sep 2007, 23:15
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Giving 5 choices for a DS question is bad enough. It's worse when you give answer choices for probabilities greater than 1. Anyway...

P(blue) = 1 - 3/10 - 2/10 = 5/10
P(blue or yellow) = 5/10 + 3/10 = 8/10 = 4/5

So if this is a PS, you will be looking for an answer choice that says 4/5
If this is a DS, you should click C and move on.



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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