Texas Instruments TI-80 - Page 61

Math, Angle, and Test Operations 2-13
nPr
(number of permutations,
MATH PRB
, item 2) returns the
number of permutations of
items
taken
number
at a time.
items
and
number
must be nonnegative integers. Both
items
and
number
can be lists.
nCr
(number of combinations,
MATH PRB
, item 3) returns the
number of combinations of
items
taken
number
at a time.
items
and
number
must be nonnegative integers. Both
items
and
number
can be lists.
items
nPr
number
items
nCr
number
!
(factorial,
MATH PRB
, item 4) returns the factorial of a
positive integer or list of integers between 0 and 69.
value
!
RANDINT(
(random integer,
MATH PRB
, item 5) generates a
random integer within a specified range. It requires two
arguments: the lower and upper boundaries of the range (in
any order). Both arguments must be integers. Both arguments
can be negative. Both arguments can be lists.
RANDINT(
lower
,
upper
)
nPr
nCr
!
(Factorial)
RANDINT(