Probability - Texas Instruments TI-34 II Explorer Plus User Manual

Probability

Keys
These numbered paragraphs provide
explanations for the corresponding numbered
keys on the illustration below.
1. H displays the following menu of
functions:
nPr Calculates the number of
possible permutations.
nCr Calculates the number of
possible combinations.
! Calculates the factorial.
RAND Generates a random
10-digit real number
between 0 and 1.
Generates a random
RANDI
integer between 2 numbers
that you specify.
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EXAS NSTRUMENTS
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Notes
The examples on the transparency
masters assume all default settings.
A combination is an arrangement of
objects in which the order is not
important, as in a hand of cards.
A permutation is an arrangement of
objects in which the order is important,
as in a race.
A factorial is the product of all the
positive integers from 1 to n , where n is a
positive whole number  69.
To control a sequence of random
numbers, you can store (L) an
integer to RAND just as you would store
values to memory variables. The seed
value changes randomly every time a
random number is generated.
For , use a comma to separate the
RANDI
two numbers that you specify.
TI-34 Û: A Guide for Teachers
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