Question 352450: The music class has 20 students & the teacher wants them to practice in groups of 5. How many different ways can the first groups of 5 be chosen? we are doing permutations & combinations. I came up with 1,860,480 or 38,760. im not sure which one is the right answer if any.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! The music class has 20 students & the teacher wants them to practice in groups of 5. How many different ways can the first groups of 5 be chosen? we are doing permutations & combinations. I came up with 1,860,480 or 38,760. im not sure which one is the right answer if any.
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20*19*18*17*16 = 1860480
But group ABCDE is the same as ADCEB, so you have to divide by 5! = 120
--> 15504
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