Combinations are studied in combinatorics but are also used in different disciplines including mathematics and finance. For any six objects eg a b c d e f there are 15 different combinations of 2 objects. Finally A few.
18-4frac 18 14times4 3060 possible answers.
Combinations are studied in combinatorics but are also used in different disciplines including mathematics and finance. 161514 321 3360 6 560. The number of combinations is the number of ways to arrange the people on the chairs when the order does. So the formula for the number of permutations is n n-k.