Casio fx-50F User Manual page 33

A Permutation (
n m
Syntax: { }P{ }, {
Example: How many four-person permutations and combinations are possible for a group
of 10 people?
A Rounding Function (Rnd)
You can use the rounding function (Rnd) to round the value, expression, or calculation result
specifi ed by the argument. Rounding is performed to the number of signifi cant digits in
accordance with the number of display digits setting.
Rounding for Norm1 or Norm2
The mantissa is rounded off to 10 digits.
Rounding for Fix or Sci
The value is rounded to the specifi ed number of digits.
Example: 200 ÷ 7 × 14 = 400
(3 decimal places)
(Internal calculation uses 15 digits.)
Now perform the same calculation using the rounding (Rnd) function.
(Calculation uses rounded value.)
P )/Combination (
n r
n m
}C{ }
10
10
200/7*14
C )
n r
* ( ) 4
n r
P
/ ( ) 4
n r
C
1 (Fix) 3
200/7
*14
200/7
0 (Rnd)
E-32
10P4 10P4
5040 5040
10C4 10C4
210 210
200 ÷ 7 × 14 200 ÷ 7 × 14
400 400
200 ÷ 7 × 14 200 ÷ 7 × 14
400000 400000
200 ÷ 7 200 ÷ 7
28571 28571
Ans × 14 Ans × 14
400000 400000
200 ÷ 7 200 ÷ 7
28571 28571
( (
Rnd Rnd Ans Ans
28571 28571