The human skeleton can be divided into two systems. The axial system has 80 bones. It consists of the skull, spine, and ribs. The appendicular system has 126 bones. It consists of the shoulders, pelvis, and limbs. What fraction of the body’s bones are in the axial system? Give your answer in the simplest form. PLEASE HELP

Awnser : 40/63
The axial skeleton supports the head, neck, back, and chest and thus forms the vertical axis of the body. It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum. The appendicular skeleton is made up of all bones of the upper and lower limbs.

I’m not absolutely sure but i think it’s 7x6x5x4x3x2=5040 because as the first character you can take any of the 7 given then you are left with 5 then 6 then 4 etc.