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26 October, 04:10

How many ways can teacher arrange 4 students in front row of class with 30 students

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Answers (2)
  1. 26 October, 04:31
    0
    30 choices for first seat

    29 for 2nd

    28 for 3rd

    27 for 4th

    answer is 30*29*28*27=657720 ways
  2. 26 October, 06:55
    0
    Choose 4 students from 30

    means 30P4

    657720
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