Texas Instruments TI-80 User Manual - Page 61

Math, Angle, and Test Operations, permutations, combinations, random integer

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nPr nPr (number of permutations, MATH PRB, item 2) returns the nCr 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) ! (factorial, MATH PRB, item 4) returns the factorial of a positive integer or list of integers between 0 and 69. value! RANDINT( 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) Math, Angle, and Test Operations 2-13

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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(