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Difficulty:
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Question Stats:
79% (01:17) correct
21%
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wrong
based on 124
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Mariah has decided to hire three workers. To determine whom she will hire, she has selected a group of 10 candidates. She plans to have one working interview with 3 of the 10 candidates every day to see how well they work together. How many days will it take her to have working interviews with all the different combinations of job candidates?
A. 720
B. 120
C. 300
D. 30
E. 333
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A. 720
B. 120
C. 300
D. 30
E. 333
----------------------------
Kudos if you liked the post...
14 Jun 2014, 12:02
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gaurav245
There are \(C^3_{10}=120\) different groups of three possible out of 10 candidates and since each of these groups is interviewed every day then total of 120 days are needed.
Answer: B.
