Real–Number Functions 4–15
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 its 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
6
_
Twenty–four people grouped six
at a time.
{\
8)
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
6
_
Fourteen women grouped six
at a time.
{\
8)
Number of combinations of
six women on the committee.
[
8)
Brings total number of
combinations back into the
X–register.
q
)
Divides combinations of
women by total combinations
to find probability that any
one combination would have
all women.
