In other words: A Permutation is an ordered Combination. There are basically two types of permutation: 1  Repetition is Allowed: such as the lock above. It could be 333.  No Repetition: for example the first three people in a running race. You can't be first and second.
For this reason, the idea that collagen supplementation can be an effective treatment for joint pain, osteoarthritis, or any other condition, is highly implausible, if not impossible in principle.
Hereâs an overview of the different types of collagen, collagen sources and their primary benefits: 1  Type 1: This is by far the most abundant, and almost considered to be the strongest, type of collagen found in the human body. 2  Type 2: Type 2 collagen primarily helps build cartilage, which is found in connective tissues.