1. Home
  2. >> combination 4 choose 2

combination 4 choose 2

Jul 30, 2020 · The formula for combination with repetition is as follows: C'(n,r) = (r+n-1)!/(r! * (n-1)!), and for permutation with repetition: P'(n,r) = n r. In the picture below, we present a summary of the differences between four types of selection of an object: combination, combination with repetition, permutation, and permutation with repetition. It's an example in which you have four balls of various colors, and you choose …

Hot Sale Products

Our products sell well all over the world, and have advanced technology in the field of crushing sand grinding powder.