Question

A child may select a small, medium, or large hamburger and then select one of lettuce, tomato, or mayonnaise for a topping. Use a tree diagram to determine the number of ways these selections may be made.
a. 9 ways
b. 12 ways
c. 6 ways
d. 16 ways
e. 18 ways

Answer 1

There are 9 ways total.

Legend: s=Small,M=medium, L=Large,Lt= lettuce,T=tomato,M=Mayonnaise.

1:Hamburger-S-Lt
2:Hamburger-S-T
3:Hamburger-S-M
4:Hamburger-M-Lt
5:Hamburger-M-T
6:Hamburger-M-M
7:Hamburger-L-Lt
8:Hamburger-L-T
9:Hamburger-L-M.

which equals 9 total.