SOLUTION: Multinomial Coefficients and Partitions Question: An experiment observes groups of 4 individuals. How many ways can we choose 5 groups of 4 from among 20 subjects.

Question 360127: Multinomial Coefficients and Partitions Question:
An experiment observes groups of 4 individuals. How many ways can we choose 5 groups of 4 from among 20 subjects.

Found 2 solutions by robertb, sudhanshu_kmr:
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!

Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
no. of ways = [ 20C4 * 16C4 * 12C4 * 8C4 * 4C4 ]/ 4!

= [ 20!/ (4!)^5 ] / 4!

= 20! / (4!)^6

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