Difference Between Permutation and Combination

A permutation is for lists where does order matters but in Combination, it doesn’t. Practically, both involve selecting a subset from several elements.


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With a simple example, when you return from the market, if your mom asks about the price, you should say it 235 (which is actual), not 325 or 532. That’s Permutation.

Permutation vs Combination

The difference between Permutation and Combination is that in a permutation, the order of the elements is taken into consideration and a permutation can be either with repetition or without repetition. In a combination, the order of the elements is not a matter of concern.

Permutation vs Combination


Comparison Table

Parameter of comparisonPermutationCombination
Definition‘Permutation’ is a collection of an object where the order of objects is important.‘Combination’ is a collection of objects where an order isn’t important.
Order effectsYesNo
DerivedMultiple Permutation  derived from a single combinationOnly single Combination may be derived from a Permutation


What is Permutation?

‘Permutation’ is defined as an arrangement that can be done using some of the objects or items in an ordered manner. It’s all about arrangement.

Suppose, a smartphone is locked by a PIN code which is 9396. To unlock, it won’t open if you enter 9693, because there is a different ordering for your smartphone’s PIN.


What is Combination?

‘Combination’ is defined as the selection that can be done using some of the items where order does not matter.


Main Differences Between Permutation and Combination

The difference Between Permutation and Combination are clearly explained below:

  1. Placement and order is the main difference between permutation and combination. In permutation, we are restricted to comply with an order but in combination, there is no such restriction.
  2.  A permutation is just an arrangement of the things where the arrangement will be in a specific order. The combination is a selection where the selection is without any specific order.
  3. In Permutation, the number of arrangements is denoted by nPr.
  4. Multiple permutations can be derived from a single combination but only a single combination may be derived from one permutation.
  5. A permutation is the choice of ‘r’ things from the group or set of ‘n’ things with the order. The combination is a selection of ‘r’ things from the large set or group of ‘n’ things without any specific order.


  1. https://pubs.acs.org/doi/abs/10.1021/co300148c
  2. https://onlinelibrary.wiley.com/doi/abs/10.1002/asmb.1976
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