Casio fx-9860GII - 5.11 The use of nCr

Using a graphic display calculator
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser’s institute
Casio fx-9860GII
Calculating binomial probabilities
5.11 The use of nCr
Example 50
Find the value of
8
3
⎛
⎝
⎜
⎞
⎠
⎟
(or
8
C
3
).
Press
MENU
. You will see the dialog box as shown on the right.
Choose 1: RUN·MAT and press
EXE
.
Press
OPTN
F6
|
F3
PROB to enter probability menu.
Press
8
F3
nCr
3
EXE
.
Example 51
List the values of
4
r
⎛
⎝
⎜
⎞
⎠
⎟
for r = 0, 1, 2, 3, 4.
Press
MENU
. You will see the dialog box as shown on the right.
Choose 7: TABLE and press
EXE
.
Press
OPTN
F4
PROB to enter probability menu.
Press
4
F3
nCr
X,i,T
EXE
.
Press
F6
TABL.
The table shows that
4
0
1
4
0
1
4
1
4
4
2
6
4
3
4
⎛
⎝
⎜
⎞
⎠
⎟
⎛
⎝
⎜
⎞
⎠
⎟
⎛
⎝
⎜
⎞
⎠
⎟
⎛
⎝
⎜
⎞
⎠
⎟
⎛
⎝
⎜
⎞
⎠
⎟
=== ==,, , , and
4
4
1
⎛
⎝
⎜
⎞
⎠
⎟
=
You may need to reset
the start value and
step values for the
table using
F5
SET.
46