Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Pizza, pizza
Pizza ... makes you hungry doesn't it?
What if you had ten toppings available. How many different two-topping pizza variations can you make ...
What definition did you have to "adjust" in order to get David's answer of 55?
Do you agree that this is a fair interpretation of the problem?
.
Source:
David Marain
source:
source:
10 pizza toppings
Choose any 2 - different or same;
How many choices?
10×9÷2=45?
10×10÷2=50?
10×11÷2=55?
10C1+10C2?
Ans: 55 Why?
— David Marain (@dmarain)
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