math
posted by Cody .
A pizza place has 5 different toppings. How many different pizzas can be made using a combination of 3 toppings per pizza

ABC
ABD
ABE
ACD
ACE
ADE
BCD
BCE
BDE
CDE
Count them. Then compute 5!/(3!2!)
posted by Cody .
A pizza place has 5 different toppings. How many different pizzas can be made using a combination of 3 toppings per pizza
ABC
ABD
ABE
ACD
ACE
ADE
BCD
BCE
BDE
CDE
Count them. Then compute 5!/(3!2!)