Choose the goal of your analysis ie to compute combinations or permutations. Enter the total number of objects n and number of elements taken at a time r 3. If the order of selection is considered it is said to be permutation.
Hence the number of possible outcomes is 2.
Pnr Cnr r. A combination describes how many sets you can make of a certain size from a larger set. Pick one of the remaining two numbers two choices 4. The group size can be calculated by.