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92.
175.
Random Integer (RanInt#) (fx-220
PLUS only)
For input of the function of the form RanInt#( a , b ), which generates a
random integer within the range of a to b .
Example: To generate a random integer in the range of 1 to 6.
Note that the values shown here are examples only. Values
actually generated by your calculator will be different.
(RanInt) 1 (,) 6 2.
4.
1.
Permutation ( n P r ) and Combination
( n C r )
These functions make it possible to perform permutation and combination
calculations.
n and r must be integers in the range of 0 ≦ r ≦ n < 1 × 10
10
.
Example 1: T
o determine how many different 4-digit values can be
produced using the numbers 1 through 7
• Numbers cannot be duplicated within the same 4-digit value (1234 is
allowed, but 1
123 is not).
7
( n P r ) 4
840.
Example 2: To determine how many different 4-member groups can be
organized in a group of 10 individuals
10 4 210.
31
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