This is the number of different combinations found by the calculator. Enter the total number of objects n and number of elements taken at a time r 3. To have no repeated digits all four digits would have to be different which is selecting without replacement.
Calculates the number of combinations of n things taken r at a time.
3 choose 2 3 choose 2 basically means choosing a number of sampling elements r from the total number of elements in the given set n. To give you a practical illustration we would be calculating the number of possible combinations in two different configurations of sets and subsets. If the elements can repeat in the combination the formula is. Looking at the formula we must calculate 6 choose 2 C 62 6 2.