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  # 21 people of which 12 are experienced. select a team of 3 so
  
  Author Message
  Intern
  Joined: 29 Apr 2013
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  21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
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  18 Sep 2013, 08:44
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  21 people of which 12 are experienced. select a team of 3 so that
  
  a) At least 1 is experienced
  b) Exactly 1 is experienced
  
  This is a PS question...
  
  Manager
  Joined: 18 Sep 2013
  Posts: 54
  Location: India
  Concentration: General Management, Strategy
  GMAT 1: 680 Q46 V36
  GPA: 3.95
  WE: Information Technology (Computer Software)
  Followers: 0
  
  Kudos [?]: 12 [1] , given: 8
  
  Re: 21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
  ### Show Tags
  
  18 Sep 2013, 09:01
  1
  KUDOS
  1
  This post was
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  aman kumar wrote:
  21 people of which 12 are experienced. select a team of 3 so that
  
  a) At least 1 is experienced
  b) Exactly 1 is experienced
  
  This is a PS question...
  
  1. Exactly 1 is experienced
  Total no of ways to select 1 person with experience - 12.
  Total no of ways to select remaining 2 persons - 9C2.
  
  hence total ways - 12 x 9C2 = 432.
  
  2. Atleast 1 is experienced
  (1E)(2NE) + (2E)(1NE) + 3E
  12(9c2) + (12c2)9 + 12c3
  
  Please press KUDOS if my post helped !!
  GMAT Club Legend
  Joined: 09 Sep 2013
  Posts: 15474
  Followers: 649
  
  Kudos [?]: 209 [0], given: 0
  
  Re: 21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
  ### Show Tags
  
  10 Apr 2016, 08:29
  Hello from the GMAT Club BumpBot!
  
  Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
  
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  Re: 21 people of which 12 are experienced. select a team of 3 so   [#permalink] 10 Apr 2016, 08:29
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explanation: The provided text is a GMAT Club forum post discussing a probability and combinatorics problem. The post contains a question but not an answer. The question is about selecting a team of 3 people from a group of 21, of which 12 are experienced, and it asks for the number of ways to form a team under two conditions: (a) at least 1 is experienced, and (b) exactly 1 is experienced.
distilabel_metadata.content: Evaluate the user given text extract and determine if it contains a math question and optionally and answer to this question.
  
  Output rules:
  
  1. Briefly describe the document and mention if it contains a question or a question and answer.
  2. Finalize the output with: Label: no-question,question,question-and-answer,multiple-question,multiple-question-and-answer
distilabel_metadata.role: system
distilabel_metadata.content: Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack
  
   It is currently 27 May 2017, 00:02
  
  ### GMAT Club Daily Prep
  
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  # Events & Promotions
  
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  # 21 people of which 12 are experienced. select a team of 3 so
  
  Author Message
  Intern
  Joined: 29 Apr 2013
  Posts: 11
  Followers: 0
  
  Kudos [?]: 2 [0], given: 5
  
  21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
  ### Show Tags
  
  18 Sep 2013, 08:44
  00:00
  
  Difficulty:
  
  (N/A)
  
  Question Stats:
  
  0% (00:00) correct 0% (00:00) wrong based on 0 sessions
  
  ### HideShow timer Statistics
  
  21 people of which 12 are experienced. select a team of 3 so that
  
  a) At least 1 is experienced
  b) Exactly 1 is experienced
  
  This is a PS question...
  
  Manager
  Joined: 18 Sep 2013
  Posts: 54
  Location: India
  Concentration: General Management, Strategy
  GMAT 1: 680 Q46 V36
  GPA: 3.95
  WE: Information Technology (Computer Software)
  Followers: 0
  
  Kudos [?]: 12 [1] , given: 8
  
  Re: 21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
  ### Show Tags
  
  18 Sep 2013, 09:01
  1
  KUDOS
  1
  This post was
  BOOKMARKED
  aman kumar wrote:
  21 people of which 12 are experienced. select a team of 3 so that
  
  a) At least 1 is experienced
  b) Exactly 1 is experienced
  
  This is a PS question...
  
  1. Exactly 1 is experienced
  Total no of ways to select 1 person with experience - 12.
  Total no of ways to select remaining 2 persons - 9C2.
  
  hence total ways - 12 x 9C2 = 432.
  
  2. Atleast 1 is experienced
  (1E)(2NE) + (2E)(1NE) + 3E
  12(9c2) + (12c2)9 + 12c3
  
  Please press KUDOS if my post helped !!
  GMAT Club Legend
  Joined: 09 Sep 2013
  Posts: 15474
  Followers: 649
  
  Kudos [?]: 209 [0], given: 0
  
  Re: 21 people of which 12 are experienced. select a team of 3 so [#permalink]
  
  ### Show Tags
  
  10 Apr 2016, 08:29
  Hello from the GMAT Club BumpBot!
  
  Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
  
  Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
  _________________
  Re: 21 people of which 12 are experienced. select a team of 3 so   [#permalink] 10 Apr 2016, 08:29
  Display posts from previous: Sort by
distilabel_metadata.role: user
distilabel_metadata.raw_output_q_a_detector_0: The provided text is a GMAT Club forum post discussing a probability and combinatorics problem. The post contains a question but not an answer. The question is about selecting a team of 3 people from a group of 21, of which 12 are experienced, and it asks for the number of ways to form a team under two conditions: (a) at least 1 is experienced, and (b) exactly 1 is experienced.
  
  Label: question