What type of counting problem is this? Tatiana has a special puzzle in which all of the pieces fit together in any way. There is no goal picture. Instead, the goal of the puzzle is to make different patterns and pictures using the pieces. If Tatiana has 50 unique puzzle pieces and she plans to use all of them, how
many possible pictures can she create?
a. Permutation without repetition
b. Combination without repetition
c. Permutation with repetition
d. Combination with repetition