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From a group of three boys and four girls, a school hallway monitor gr

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From a group of three boys and four girls, a school hallway monitor gr  [#permalink]

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New post 20 Dec 2016, 01:30
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A
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C
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Difficulty:

  15% (low)

Question Stats:

80% (00:35) correct 20% (01:09) wrong based on 71 sessions

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From a group of three boys and four girls, a school hallway monitor group is to be selected. If the group is to be formed of four girls, how many different such groups can be formed?

A. 1
B. 4
C. 6
D. 18
E. 24

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Re: From a group of three boys and four girls, a school hallway monitor gr  [#permalink]

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New post 20 Dec 2016, 04:27
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Omkar Kamat
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Re: From a group of three boys and four girls, a school hallway monitor gr  [#permalink]

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New post 07 Mar 2017, 04:49
Wow, this one was kind of tricky. Why is there only one possibility?
As I understood so far, there must be at least 4 girls in the group. So only the 4 girls is one possible combination. Than we have all the other combinations with the boys included, 1 at a time, only 2 of them, and finally all 3.
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Re: From a group of three boys and four girls, a school hallway monitor gr  [#permalink]

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New post 07 Mar 2017, 08:09
Bunuel wrote:
From a group of three boys and four girls, a school hallway monitor group is to be selected. If the group is to be formed of four girls, how many different such groups can be formed?

A. 1
B. 4
C. 6
D. 18
E. 24


( B, B , B ) & ( G , G , G , G )

Since the team must include all the girls , we must include all the girls and we can have only 1 team...

Answer must be (A) 1
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Re: From a group of three boys and four girls, a school hallway monitor gr &nbs [#permalink] 07 Mar 2017, 08:09
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