# Probability-Spinners _ Coins

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```					  Probability –
Spinners & Coins
M/J Math 1
EETT Lesson #7
•Outcomes are the possible
results of a probability event.
•Probability is the chance that
something will happen.
•P(event) =
ways event can happen
total possible outcomes
•Marble Example: In one marble
is chosen, then find…
5
•P(blue)   = 12
4   1
•P(green) = 12 = 3
3     1
•P(red) = 12 = 4
0
•P(yellow) = 12 = 0
•Always reduce!
•The probability of an event
occurring is always from 0 & 1.

0             ½           1
Impossible     Equally     Certain
Likely
•Sample space is the set
of all possible outcomes.
•Ex: Flipping a coin = {H or T}
•Coin & number cube: If
your flip a coin and roll a
six-sided number cube,
then find…
1
•P(H, 3) =
12
3    1
•P(T, Odd #) =       12
= 4
6    1
•P(H or T, Prime #) =         12
= 2
0
•P(T, 7) =   12
=0
•Spinner example: If both
spinners are
spun once, find…        4       2
3
•P(sum of 7)      = 16       6   8
1
•P(2, 1)   = 16
0          3   5
•P(sum <     2) = 16 = 0
6    1   1   7
•P(sum >     10) = 12 = 2

```
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