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svp [43]
3 years ago
13

A professor must randomly select 4 students to participate in a mock debate. There are 20 students in his class. In how many dif

ferent ways can these students be selected, if the order of selection does not matter?
Mathematics
2 answers:
lina2011 [118]3 years ago
4 0

There are 4845 different ways he could chose the students.

Aneli [31]3 years ago
3 0
The equation we used in this problem is the combination of probability. The formula used is "nCr<span> = </span>n<span>! / </span>r! * (n<span> - </span>r<span>)!" where, n is all 20 students and r is the 4 students. Substituting the numbers we get 4845 ways.</span>
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