©Ms. Garcia Math
Name:
ID:
Quiz:
Grade:
Probability With Marbles
?
The probability of event A is the number of ways event A can occur divided by the total number of possible outcomes.
An outcome is the result of a single trial of an experiment.
A glass jar contains marbles. If a single marble
red
is chosen at random from the jar, what is
green
the probability of choosing a
red marble
?
blue
a
green marble
? a
blue marble
? a yellow marble?
yellow
(Find the requested probabilities as a fraction)
Total
1)
P(red)
=
number of ways to choose red
total number of marbles
2)
P(green)
=
number of ways to choose green
total number of marbles
3)
P(blue)
=
number of ways to choose blue
total number of marbles
4)
P(yellow)
=
number of ways to choose yellow
total number of marbles
5)
P(NOT red)
=
1 - P(red)