Casio FX-7400G User Manual page 36

Example To calculate x and y when r = 25 and % = 56
Operation
!Zcc1(Deg)Q
K[2(ANGL)[[
2(Rec()25,56)w
(5) Permutation and Combination
u u u u u Permutation
n!
nPr = –––––
(n – r)!
Example To calculate the possible number of different arrangements
using 4 items selected from among 10 items
Formula
P = 5040
10 4
Example To calculate the possible number of different combinations of
4 items that can be selected from among 10 items
Formula
C = 210
10 4
(6) Other Things to Remember
k k k k k Multiplication Sign
You can leave out the multiplication sign in any of the following cases.
• In front of the following scientific functions:
–1
sin, cos, tan, sin , cos
Seq, Min, Max, Mean, Median, List, Dim, Sum
Examples: 2 sin30, 10log1.2, 2 3, etc.
• In front of constants, variable names, Ans memory contents.
Examples: 2", 2AB, 3Ans, 6X, etc.
• In front of an open parenthesis.
Examples: 3(5 + 6), (A + 1)(B –1)
Basic Calculations
Ans
u u u u u Combination
n!
nCr = –––––––
r! (n – r)!
Operation
10K4(PROB)
2(
Operation
10K4(PROB)
3(
–1 –1 x e
, tan , log, In, 10 ,
Chapter 2
°
Display
1 – 13.979 – # 13.97982259 (x)
2 – 20.725 – # 20.72593931 (y)
Display
P )4w
n r
Display
C )4w
n r
x 3 x y
, , , Pol( , ), Rec(
5040
210
r d dx
, % ), / ,
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