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.
Collagen and calcium for bone strength. Collagen and calcium are responsible for the strength of your bones! So if youâre a vegetarian osteoporosis sufferer, you need to ensure youâre supporting healthy collagen production by getting enough protein and calcium.