There are 17 appetizers available at a restaurant. from these, barbara is to choose 12 for her party. how many groups of 12 appetizers are possible?

This is a question of combination. In other words, the question requires determination of number of ways in which 12 appetizers can be chosen form a total of 17 appetizers.

Therefore,
Possible number of 12 groups = 17C12 = 17!/[12!*(17-12)!] = 6188

The first one minimumi hope my answer you.

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