Question

how many types of bone in child and adult and old people​

Answer 1

Answer:

Slowly, as you grew older, everything became a bit bigger, including your bones. A baby's body has about 300 bones at birth. These eventually fuse (grow together) to form the 206 bones that adults have. Some of a baby's bones are made entirely of a special material called cartilage (say: KAR-tel-ij).

Answer 2

Answer:

A baby body has about 300 bones at birth this eventually fuse to form the 206 bones that adult have and in old people same 206 bones they have and it's called cartilages