So the above equation expresses the number of ways for picking r unique unordered outcomes from n possibilities. Rules In Detail The has Rule. The word has followed by a space and a number.
Choose Count combinations as the analytical goal.
The number says how many minimum from the list are needed for that result to be allowed. 6-2 62. COMBIN62 will get 15 combinations. To determine the number of combinations find the number of digits possible for each position and then multiply these numbers.