January/February 2014 Maths Challenge

Students at a school canteen can choose either a hamburger or a hot dog and can choose from among ketchup, mustard, and cheese for toppings.
If students can have all, some, or none of the toppings, how many different options are available?

Suggested solution:
16. There are 8 topping options (including no topping). Multiply by 2 for the hamburger and hotdog. There are 16 different options altogether.

** The winner of the January/February Maths Challenge was James Johnston of Scoil Mhuire, Strokestown, Roscommon. James was named Mathematician of the Month and won a gift voucher worth EUR100. **