Math

Alex's favorite restaurant is a buffet-style Chinese restaurant downtown. Each time he goes, he chooses 2 appetizers and 1 entree. If the restaurant has four appetizers and 5 entrees to choose from, how many, times could Alex go to the restaurant without choosing the same combination of dishes?
I know how to do this question. My question is : Is this a permutation or combination? If you can you please solve this by using the formula like nPr or nCr?

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  1. I would consider it a "combination" , assuming that the order that you choose the appetizers should not matter

    Number of ways
    = C(4,2) x C(5,1)
    = 6x5
    = 30

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