1. Probability
Chances Are…
You can do it!
Activity #4

2. A woman has two children. What are the odds that both are boys?
Show how you would solve this in your math journal.

3. You could set up a tree diagram in your journal:
BOY (50%)
BOY ( %)
GIRL ( %)
BOY
( %)
GIRL (50%)
GIRL ( %)
Fill in the spaces and mark the %.

4. BOY (50%)
GIRL (50%)
BOY (50%)
GIRL (50%)
To find the odds, just multiply across that path that leads to two boys.
.50 X .50 = .25 or 25%

5. Did you solve this problem another way?
Share the different ways people solved this in class and write them in your journal.
End of Activity