33
Ti36eng1.doc TI-36X II Manual Linda Bower Revised:
01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 33 of
48
³
Problem
Compute
n!
r!(n-r)!
where n=52 and r=5.
52
%6""
nPr nCr !
Þ
DEG
V
52!
ß
DEG
=N
5
%6""V<
N
52
;
5
O%6""O
V
52!
ñ
(5!
è
(52
&
ß
2598960.
DEG
You no doubt recognize the above formula to find the
number of possible combinations of
n
objects taken
r
at
a time without replacement. You can obtain this result
more directly by using
nCr
on the
Probability
menu.
³
Problem
How many ways can you deal 5 cards from a deck of 52
cards?
52
%6"
nPr nCr !
Þ
DEG
5
V
52 nCr 5
ß
2598960.
DEG
There are 2598960 ways to deal 5 cards from a deck of
52 cards.
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