Permutation is when order matters, combination is when order does not matter
They are concepts used in probability theory.
Because a permutation includes all the different arrangements or order of the items in a set. In a combination the order doesn't matter or count.
N!/N
The "combination" for a lock is actually a permutation, an ordered sequence. So for example: 1,2,3 and 3,2,1 are the same combination, but a different permutation. When opening a lock, obviously the sequence is important, so we want to calculate the permutations. To do that, you multiply the number of possible choices for the first position times the number of possible choices for the second position, etc. Assuming that you can use the same number in all three positions (so 60 to the left, 60 to the right and 60 to the left is a valid choice), there are 60 x 60 x 60 possible permutations, or "combinations" for the lock = 216,000. If you were not allowed to use the same number twice, it would be 60 x 59 x 58 = 205,320. If you could repeat the same number, but not in sequence (so 20, 30, 20 is OK; but 20, 20, 30 is not), then there would be 60 x 59 x 59 = 208,860.
the permutation is an specific ordered combination. the combination is not need specific order combination...
Combination if you don't care about the order you eat them in. Permutation if you do such as the appetizers, then entree and finally desert.
The Maths terms combination and permutation apply in chemistry when making the expected industrial calculation.
please answer
A permutation is an arrangement of objects in some specific order. Permutations are regarded as ordered elements. A selection in which order is not important is called a combination. Combinations are regarded as sets. For example, if there is a group of 3 different colored balls, then any group of 2 balls selected from it will be considered as a combination, whereas the different arrangements of every combination will be considered as a permutation.
Permutation is when order matters, combination is when order does not matter
They are concepts used in probability theory.
If there is a group of 3 coloured balls, then any groups of 2 balls selected from it will be considered as a combination, whereas the different arrangements of every combination will be considered as a permutation
Because a permutation includes all the different arrangements or order of the items in a set. In a combination the order doesn't matter or count.
1=1
You would use combination when order does not matter.
The words sought may be permutation or permeation. (see related questions)