Math Solutions

[Steps Shown] Counting: Grading One professor grades homework by randomly choosing 5 out of 12 homework problems to grade. How many different groups of

Question: Counting: Grading One professor grades homework by randomly choosing 5 out of 12 homework problems to grade.

  1. How many different groups of 5 problems are there from the 12 problems?
  2. Probability extension: Jerry did only 5 problems of one assignment. What is the probability that the problems he did comprised the group that was selected to be graded?

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