In other words choosing 3 balls out of 16 or choosing 13 balls out of 16 have the same number of combinations. Its just a standard notation used for combinations but you might also see something like nCr used instead. The possible combination of numbers and letters on our license plate is 10 x 10 x 10 x 10 x 26 x 26 6760000.
Enter your objects or the names of them one per line in the box below then click Show me to see how many ways they can be arranged and what those arrangements are.
The number of combinations is the number of ways to arrange the people on the chairs when the order does not matter. N - r where n represents the total number of items and r represents the number of items being chosen at a time. Solve the equation to find the number of combinations. 10 C 3 1010 9 8 120 3.