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There are ten people in the Baking Club, including Mark. They choose 3 people to form an executive committee. How many possible committees could be formed that include Mark?

 

72 is wrong and 40 is wrong

 May 3, 2020
 #1
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There are 10*9 = 90 ways to choose the committee.

 May 3, 2020
 #2
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If you include Mark on the committee   there are 9 people left to choose 2 from to form the committee

         9 c 2 = 36

 May 3, 2020
 #3
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+1

See - "https://web2.0calc.com/questions/halp_100"

 

coolsmileycool

 May 3, 2020

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