7. A family has five children, 2 girls and 3 boys. They put their names in a hat, and randomly draw a name to decide who will do the supper dishes. They do this three days in a row. If a name is chosen it is never put
back into a hat, so there is no risk of doing the dishing more than one time!
a. Constructing a tree diagram to calculate the following probabilities:
3 mar
b. all three chosen are boys.
1 I ma
c. at least two chosen are boys.
1 me
d. the second day a girl is chosen.
1 m