SOLUTION: How many unordered sets are there of two items chosen from four?
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Question 1148146
:
How many unordered sets are there of two items chosen from four?
Answer by
ikleyn(52778)
(
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):
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put this solution on YOUR website!
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It is the number of
combinations
of 4 items taken 2 at a time
=
= 6.
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On Combinations, see introductory lessons
-
Introduction to Combinations
-
PROOF of the formula on the number of Combinations
-
Problems on Combinations
-
OVERVIEW of lessons on Permutations and 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 under the topic "
Combinatorics: Combinations and permutations
".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.
