Texas Instruments solar TI-36X - Manual (Page 35)

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.
5 2 % 6 " " nPr nCr ! Þ
,-/
V 52! ß
,-/
= N 5 % 6 " " V <
N 5 2 ; 5 O % 6 " " O
V 52! с(5!и(52 & ß
2598960.
,-/
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?
5 2 % 6 " nPr nCr ! Þ
,-/
5 V 52 nCr 5 ß
2598960.
,-/
There are 2598960 ways to deal 5 cards from a deck of
52 cards.