Texas Instruments TI-84 Plus Guide Book

Chapter 2: Math, Angle, and Test Operations 80
rand
randrand
rand
rand (random number) generates and returns one or more random numbers > 0 and < 1.
To generate a list of random-numbers, specify an integer > 1 for
numtrials (number of
trials). The default for
numtrials is 1.
rand[(numtrials)]
Note: To generate random numbers beyond the range of 0 to 1, you can include rand in
an expression. For example,
rand5 generates a random number > 0 and < 5.
With each
rand execution, the TI-84 Plus generates the same random-number sequence
for a given seed value. The TI-84 Plus factory-set seed value for
rand is 0. To generate a
different random-number sequence, store any nonzero seed value to
rand. To restore
the factory-set seed value, store 0 to
rand or reset the defaults (Chapter 18).
Note: The seed value also affects randInt(, randNorm(, and randBin( instructions.
nPr, nCr
nPr, nCrnPr, nCr
nPr, nCr
nPr (number of permutations) 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.
items nPr number

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-