Last updated April 10, 2022

Status: Tags: #archivedCards/macm101/combinatorics Links: Combinatorics

Combinations

• Combinations with repetitions

R-combinations def + notation ?

• An r-combination of elements of a set is an unordered selection of r elements from the set
  • Thus, simply an r-element subset of the set
• The number of r-combinations of a set with n distinct elements is denoted by C(n,r). Note that C(n,r) is often denoted by and is called a binomial coefficient

Equation for C(n,r) ?

Prove the equation for C(n,r)

Examples

Prove ?

Backlinks

1

list from Combinations AND !outgoing(Combinations)

References:

Created:: 2021-11-08 08:45