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Statistics and probability

Course: Statistics and probability > Unit 8

Lesson 3: Combinations
Math
Statistics and probability
Counting, permutations, and combinations
Combinations
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Combinations

CCSS.Math: HSS.CP.B.9
Google Classroom
You might need: Calculator

Problem

When a customer buys a family-sized meal at certain restaurant, they get to choose 3 side dishes from 9 options. Suppose a customer is going to choose 3 different side dishes.
How many groups of 3 different side dishes are possible?
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, start text, p, i, end text or 2, slash, 3, space, start text, p, i, end text
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