Question

when and where to do multiplication and addition in permutation. ​

Answer 1

Step-by-step explanation:

In permutation if factorial is not cancel out we must multiply. Example 3! = 3x2x1 = 6

Answer 2

Answer:

Step-by-step explanation:

When you rearrange the order of the set. For example:

1+2+3 can become 2+3+1 or 3+1+2 or 2+1+3 and so on