Permutation And Combination - Casio fx-9860G Series User Manual

k Permutation and Combination
Permutation
n P r = n P r =
• Be sure to specify Comp for Mode in the Setup screen.
Example 1 To calculate the possible number of different arrangements using 4
items selected from among 10 items
Formula
P = 5040
10 4
Example 2 To calculate the possible number of different combinations of 4 items
that can be selected from among 10 items
Formula
C = 210
10 4
k Fractions
How you should input fractions depends on the input mode that is currently selected.
Math input mode
Linear input mode
• For information about the Math input mode, see "Input Operations in the Math Input Mode"
on page 1-3-10.
• Fraction calculation results are always reduced before being displayed.
2-4-10
Function Calculations
n ! n !
( n – r )! ( n – r )!
10
10
Improper Fraction
7 7
3 3
($ ($
7 { 3 7 { 3
Numerator
$ $
( (
20070201
Combination
n C r = n C r =
r ! ( n – r )! r ! ( n – r )!
Operation
6( )3(PROB)2(
Operation
6( )3(PROB)3(
$( $(
) ) ( (
Integer Part
Denominator
) )
n ! n !
P )4w
n r
C )4w
n r
Mixed Fraction
1 1
2 2
3 3
) ) ) )
2 { 1 { 3 2 { 1 { 3
Denominator
Numerator
$ $ $ $
( ( ) )