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combination question
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19 Nov 2016, 12:24
00:00
Question Stats:
100% (02:46) correct
0% (00:00) wrong based on 2 sessions
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ben needs to form a committee of 3 from a group of 8 engineers to study design improvements for a product. if two of the engineers are too inexperienced to serve together on the committee , how many different committees can ben form?
Re: combination question
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20 Nov 2016, 01:55
sandy wrote:
Which book?
Please share the question details as this is a forum for students. This enables other students use the material we discuss here.
Please add tags to the question as per rules of the forum.
Regards
PS: I have corrected the answer. it is indeed 50.
question details? i gave every thing that is present about the question , question and the answer. its a private institute gre test prep book where questions and their answers are shared nothing else.
Re: combination question
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04 Feb 2017, 08:59
Answer 50 is correct.Consider this case: When no. of combinations when both inexperienced are not together=Total no. of combinations-no. of combinations when both inexperienced are together=8C3-6C1(as two members are inexperienced engineers and we have to select only one member from all experienced engineers(6))=56-6=50. Hope it helps.
Re: combination question
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30 Nov 2021, 00:30
you need to choose 3 engineers from 8 engineers so 8C3 Out of three engineers 2 are inexperienced so you need to arrange them 3P2 finally you need to exclude 2 inexperienced engineers so 8C3-3P2=50