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A committee of 4 is to be chosen from a group of students. If the number of students in the group increases by 1, the number of different committees triples. How many students are in the group?

 Jun 26, 2022
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Original number of students==5

 

5 C 4 ==5 committees

 

5+1 ==6 students

 

6 C 4 ==15 committees [or 3x when there were only 5 students]

 Jun 26, 2022

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