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Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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02 Feb 2015, 17:44
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Difficulty:
95% (hard)
Question Stats:
44% (01:32) correct 56% (02:52) wrong based on 61 sessions
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Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one green marble. Suppose we are going to put them into three cups: a black cup, a white cup, and a purple cup. The only restriction is that the two red marbles can’t be in the same cup. We could put as many as five (all except one of the reds) in any cup. We could leave one cup empty, or put some in each of the three cups. All combinations are allowed that don’t involve the two red marbles in the same cup. How many combinations are possible? (A) 90 (B) 180 (C) 360 (D) 540 (E) 720
Re: Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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05 Feb 2015, 14:48
mikemcgarry wrote:
Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one green marble. Suppose we are going to put them into three cups: a black cup, a white cup, and a purple cup. The only restriction is that the two red marbles can’t be in the same cup. We could put as many as five (all except one of the reds) in any cup. We could leave one cup empty, or put some in each of the three cups. All combinations are allowed that don’t involve the two red marbles in the same cup. How many combinations are possible? (A) 90 (B) 180 (C) 360 (D) 540 (E) 720
Re: Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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05 Feb 2015, 14:57
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aviram wrote:
mikemcgarry wrote:
Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one green marble. Suppose we are going to put them into three cups: a black cup, a white cup, and a purple cup. The only restriction is that the two red marbles can’t be in the same cup. We could put as many as five (all except one of the reds) in any cup. We could leave one cup empty, or put some in each of the three cups. All combinations are allowed that don’t involve the two red marbles in the same cup. How many combinations are possible? (A) 90 (B) 180 (C) 360 (D) 540 (E) 720
The OA here is different from the one posted on the Magoosh link. I got 90, which is the OA here, but the site says 180.
Dear aviram, My friend, be careful. On the Magoosh site, there are two questions, #8 and #9, that superficially look identical, but there's a subtle different makes the answers different. The question posted here in this GC thread is #9, which indeed has the OA you calculated, but when you looked at the Magoosh website, I believe you looked at the OA of #8. You never can read too carefully on the GMAT Quant section. Does all this make sense? Mike _________________
Mike McGarry Magoosh Test Prep
Education is not the filling of a pail, but the lighting of a fire. — William Butler Yeats (1865 – 1939)
Re: Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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05 Feb 2015, 23:10
mikemcgarry wrote:
aviram wrote:
mikemcgarry wrote:
Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one green marble. Suppose we are going to put them into three cups: a black cup, a white cup, and a purple cup. The only restriction is that the two red marbles can’t be in the same cup. We could put as many as five (all except one of the reds) in any cup. We could leave one cup empty, or put some in each of the three cups. All combinations are allowed that don’t involve the two red marbles in the same cup. How many combinations are possible? (A) 90 (B) 180 (C) 360 (D) 540 (E) 720
The OA here is different from the one posted on the Magoosh link. I got 90, which is the OA here, but the site says 180.
Dear aviram, My friend, be careful. On the Magoosh site, there are two questions, #8 and #9, that superficially look identical, but there's a subtle different makes the answers different. The question posted here in this GC thread is #9, which indeed has the OA you calculated, but when you looked at the Magoosh website, I believe you looked at the OA of #8. You never can read too carefully on the GMAT Quant section. Does all this make sense? Mike
Whatever you say makes sense to me dear Mike _________________
"Hardwork is the easiest way to success." - Aviram
One more shot at the GMAT...aiming for a more balanced score.
Re: Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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20 Mar 2015, 03:57
mikemcgarry wrote:
Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one green marble. Suppose we are going to put them into three cups: a black cup, a white cup, and a purple cup. The only restriction is that the two red marbles can’t be in the same cup. We could put as many as five (all except one of the reds) in any cup. We could leave one cup empty, or put some in each of the three cups. All combinations are allowed that don’t involve the two red marbles in the same cup. How many combinations are possible? (A) 90 (B) 180 (C) 360 (D) 540 (E) 720
Re: Suppose we have six marbles: 3 blue marbles, 2 red marbles, and one gr
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20 Dec 2017, 05:06
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44% (01:32) correct 
