Permutation is an ordered arrangement of a group of objects. 1  The permutation of n objects taken r at a time is represented as nPr. 2  The permutation or arrangement of 9 different balls in 3 different rows can be done in 9P3 = 504 ways.  The permutation of n objects taken all at a time is represented as nPn = n!.
Collagen is a protein that is part of cartilage, bone, and other tissues in animals and humans. People use collagen from chickens for medicine. Chicken collagen is used to treat joint pain associated with many types of arthritis and surgery, as well as back pain, neck pain, and pain following injury.
1 Provides the most abundant and essential building blocks for maintaining healthy articular cartilage.  Immucell collagen type 2 is a complete joint support supplement made of 100% pure collagen type II from chicken sternal cartilage Available in 600 mg capsules as a complete joint supplement.