Permutation And Combination - Casio CFX9850GBPLUS User Manual

k Permutation and Combination
u 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 K 6 (g )3 (PROB)2 (
10 K 6 (g )3 (PROB)3 (
Improper Fraction
7 7
3 3
($7c3) ($7c3)
7 { 3 7 { 3
Numerator
(7$3) (7$3)
20070201
u Combination
n C r = n C r =
r ! ( n – r )! r ! ( n – r )!
Operation
Operation
(1$(()2e1c3) (1$(()2e1c3)
Integer Part
Denominator
n ! n !
) 4 w
P
n r
) 4 w
C
n r
Mixed Fraction
1 1
2 2
3 3
2 { 1 { 3 2 { 1 { 3
Denominator
Numerator
(2$1$3) (2$1$3)