Camp dinners

This task is about different meal combinations and tree diagrams.
Ari was at a school camp. For dinner he could choose from:
  • stew, pie, or fish,
  • potatoes or rice,
  • and salad or peas.
Ari's choices are shown in the tree diagram below.
tree-diagram-stew-pie-fish.png

Question 2Change answer

a)  How many of the different combinations of dinners have ...
     i)  a pie? 
     ii) potatoes? 
     iii) a salad? 
     iv) rice and salad? 
     v) fish and peas? 

Question 2Change answer

b)  In total, how many different combinations of dinners are there for Ari to choose from?