Casio fx-9860G SD - Manual (Page 92)

20050401
2-4-10
Function Calculations
n ! n !
n Pr = ––––– n Cr = –––––––
(n – r)! r ! (n – r)!
k Permutation and Combination
u u u u u Permutation u u u u u Combination
• Be sure to specify Comp for Mode in the Setup screen.
○ ○ ○ ○ ○
Example To calculate the possible number of different arrangements using 4
items selected from among 10 items
Formula Operation
10
P
4
= 5040 10K6( g)3(PROB)2(
n
P
r
)4w
○ ○ ○ ○ ○
Example To calculate the possible number of different combinations of 4 items
that can be selected from among 10 items
Formula Operation
10
C
4
= 210 10K6( g)3(PROB)3(
n
C
r
)4w
k k k k k Fractions
How you should input fractions depends on the input mode that is currently selected.
• For information about the Math input mode, see “Input Operations in the Math Input Mode”
on page 1-3-8.
• Fraction calculation results are always reduced before being displayed.
Denominator
Improper Fraction Mixed Fraction
Math input mode
Linear input mode
7
3 1
3
2
7 { 3 2 { 1 { 3
Numerator Denominator Integer Part
Numerator
($7 c3) (1$( ()2e1c3)
(7$3) (2$1$3)