A 12 B. 840 C. 120 D. 24 Ms. Cruz wants to produce different sets of test questions for her essay test: If she plans to do this by putting together 3 out of 5 questions she prepared, how many different sets of questions could she construct? A 10 B. 20 C. 80 D. 60
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This can be calculated using the combination formula, which is given by: C(n, r) = n! / (r!(n-r)!) where n is the total number of items and r is the number of items to be chosen. In this case, n = 5 (the total number of questions) and r = 3 (the number of Show more…
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