counting
Card Set Information
Author:
carolinc
ID:
95409
Filename:
counting
Updated:
2011-07-27 13:21:27
Tags:
counting
Folders:
Description:
and more counting
Show Answers:
permutation
selecting more than one item
WITHOUT
replacement and order is
IMPORTANT
combination
selecting more than one item WITHOUT replacement and order is NOT IMPORTANT
What is the difference between with and without replacement?
With replacement means the same item can be chosen more than once.
Without replacement means the same item cannot be selected more than once.
What is an
intersection
?
The
Intersection
of two sets is the overlap of the sets;
what they
both have in common
.
A intersect B = { x | x A and x B }
What is a union
?
The Union of two sets consists of all
elements in
A or B or BOTH.
What is mutually exclusive?
nothing in common