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In how many ways can a teacher arrange 6 students in the front row of a classroom with a total of 20 students?
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In how many ways can a teacher arrange 6 students in the front row of a classroom with a total of 20 students?

User Jodocus
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The concept of the question above is Permutation where in we are to arrange to arrange the 6 students from which there are 20 students. This is the "permutation of 20 taken 6" or 20P6. The numerical value of the permutation is equal to 27907200. 
User Shintu Joseph
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