Real–Number Functions
4–15
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
The RANDOM function uses a seed to generate a random number. Each random
number generated becomes the seed for the next random number. Therefore, a
sequence of random numbers can be repeated by starting with the same seed. You
can store a new seed with the SEED function. If memory is cleared, the seed is reset
to zero. A seed of zero will result in the calculator generating it's own seed.
Example: Combinations of People.
A company employing 14 women and 10 men is forming a six–person safety
committee. How many different combinations of people are possible
?
Keys: Display: Description:
24
Ï
6
_
Twenty–four people
rouped six
at a time.
¹
x
Total number of combinations
possible.
If employees are chosen at random, what is the probability that the committee will
contain six women
?
To find the probability of an event, divide the number of
combinations for that event by the total number of combinations.
Keys: Display: Description:
14
Ï
6
_
Fourteen worriers grouped six
at a time.
¹
x
Number of combinations of
six women on the committee.
w
Brings total number of
combinations back into the
X–register.
¯
Divides combinations of
women by total combinations
to find probability that any
one combination would have
all women.
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