Answer to Question #225454 in Statistics and Probability for meo

Question

1.    If Johnny had 20 complete living room outfits, disregard color scheme, how many different sets of five complete outfits could be arranged? ________

Answer 1

It's a simple combinatorics

For our case there is a formula: C⁵₂₀ = 20!/(15!*5!) = 20*19*18*17*16/(5*4*3*2) = 15504