HP HP-20S - Hyperbolic Functions

The number of combinations of n objects taken r at a time is the num-
ber of different sets containing r items that can be taken from a larger
group of n items. No item occurs more than once in the set of r items,
and different orders of the same r items are not counted separately.
The number of permutations of n objects taken r at a time is the num-
ber of different arrangements of r items that can be taken from a
larger group of n items. No item can occur more than once in an ar-
rangement, and different orders of the same r items are counted
separately.
Keys: Display:
5 5.0000
3 () 10.0000
5 5.0000
3 (] 60.0000
Probability Formulas
n!
Cnr =
n!
Pnr = ——
(n — 1)
(n — 1)
Description:
Enters the n-value.
Enters the r-value; cal-
culates combinations
of 5 objects, 3 at a
time.
Enters the n-value.
Enters the r-value; cal-
culates permutations
of 5 objects, 3 at a
time.
Hyperbolic Functions
40 3: Numeric Functions