SOLUTION: How many different sandwiches can you make if you can choose exactly four items out of six?

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Question 325475: How many different sandwiches can you make if you can choose exactly four items out of six?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
6*5*4*3 = 360
But, since the order doesn't matter, divide by 4*3*2*1
= 360/24
= 15