Permutations and Combinations
Combinatorics
Copyright
Standards
2006,
Test Barry
Practice Exam
Mabillard.
0
www.math40s.com
www.math40s.com
1. Determine the middle term in the expansion of ( a 2b )
10
2. In how many ways can 13 colleagues sit at two roun
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Permutations and Combinations
Combinatorics
Copyright
Standards
2006,
Test - ANSWERS
Barry Mabillard.
0
www.math40s.com
www.math40s.com
1. Determine the middle term in the expansion of ( a 2b )
10
10
=5 .
2
Now apply the
formula:
n-k
k
tk+1 =n Ck ( a) (
SETS, SET NOTATION, AND OPERATIONS WITH SETS
SETS AND SET NOTATION
A set is a collection of objects called elements or members. The members of a set are either
written using roster notation, which lists all the members of the set, or set-builder notation,