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What is the number of different ways to choose a chairman, two deputies, and two assistants for the class committee out of 7 students up for elections.

 Feb 10, 2020

Best Answer 

 #1
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How are you getting all these questions?????

 

Well, there are 7C1 = 7 ways for the chairmen.

 

6C2 = 15 ways to choose two deputies (2 deputies out of 6 remaining people).

 

4C2 = 6 ways to choose two assistants (2 assistants out of 4 remaining people)

 

Multiplying them: 15*6*7 = 630 different ways.

 Feb 10, 2020
 #1
avatar+288 
+1
Best Answer

How are you getting all these questions?????

 

Well, there are 7C1 = 7 ways for the chairmen.

 

6C2 = 15 ways to choose two deputies (2 deputies out of 6 remaining people).

 

4C2 = 6 ways to choose two assistants (2 assistants out of 4 remaining people)

 

Multiplying them: 15*6*7 = 630 different ways.

AnimalMaster Feb 10, 2020

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