SOLUTION: How many 3-element subsets does the set (A, B, C, D, E, F) have?
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Question 1053374: How many 3-element subsets does the set (A, B, C, D, E, F) have?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
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How many 3-element subsets does the set (A, B, C, D, E, F) have?
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= = 5*4 = 20.
is the number of combinations of 6 objects taken 3 at a time.
On combinations, see the lessons
- Introduction to Combinations
- PROOF of the formula on the number of Combinations
- Problems on Combinations
in this site.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook.
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