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Anthony, Brad, and Cris are inviting 2 friends each to a party. If Ant

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Anthony, Brad, and Cris are inviting 2 friends each to a party. If Ant [#permalink]

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New post 07 May 2017, 11:06
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

88% (01:15) correct 12% (02:09) wrong based on 25 sessions

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Anthony, Brad, and Cris are inviting 2 friends each to a party. If Anthony has 4 friends from which to choose, Brad has 2, and Cris has 5, how many different groups of 6 invitees are possible?

A. 40
B. 60
C. 66
D. 462
E. 720
[Reveal] Spoiler: OA

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Re: Anthony, Brad, and Cris are inviting 2 friends each to a party. If Ant [#permalink]

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New post 07 May 2017, 11:40
Anthony can choose his 2 friends in 4c2 or 6 ways
Cris can choose his 2 friends in 5c2 or 10 ways
Brad can choose his 2 friends in 1 way since he has 2 friends only

Hence they can invite their friends in 6*10*1 or 60 ways(Option B)

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Re: Anthony, Brad, and Cris are inviting 2 friends each to a party. If Ant   [#permalink] 07 May 2017, 11:40
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Anthony, Brad, and Cris are inviting 2 friends each to a party. If Ant

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