math
posted by edriona on .
A cafe sells turkey,roast beef,ham, or cheese sandwiches;milk,water,or juice;and yogurt and fruit. how many different meals are possible for a person who wants a sandwich,drink, and dessert.

make a possibility tree:
turkey
roast beef
ham
cheese
Multiply the number of sandich types (4) times the number of drink types (3) times the number of desserts (2) and you get 24 possible combos. It's that simple (go figure!)