manual

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© 2007 TEXAS INSTRUMENTS INCORPORATED TI-34 MultiView: A Guide For Teachers 111
Probability
Keys
1. H displays two submenus, PRB and RAND.
PRB menu:
nPr Calculates the number of
possible permutations of n
items taken r at a time.
nCr Calculates the number of
possible combinations of n
items taken r at a time.
! Calculates the factorial of a
number.
RAND menu:
rand Generates a random number
between 0 and 1.
randint( Generates a random integer
between 2 integers, A and B,
where A  Randint  B.
Notes
• The examples on the transparency masters
assume all default settings.
• A permutation is an arrangement of objects
in which the order is important, as in a race.
• A combination is an arrangement of objects
in which the order is not important, as in a
hand of cards.
• A factorial is the product of all the positive
integers from 1 to n, where n is a positive
whole number  69.
• You can store (L) an integer to rand just
as you would store values to memory
variables. If you wish to control the random
numbers generated by all calculators in your
class, have all students store the same
number to rand; the sequence of random
numbers is then the same on all of the
calculators, if desired.
•For randint, use a comma to separate the 2
numbers that you specify.
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