How many permanent teeth do adults have? 

A. 24

B. 28

C. 32

D. 36

Take a guess, let's see how many people know the correct answer. It's for fun. No cheating!! 

What did you guess? The answer is C. At birth, people usually have 20 baby (primary teeth), which start to come in around 6 months of age. They fall out at various times throughout childhood. By age 21, all 32 of the permanent teeth have usually erupted. 16 teeth in the upper jaw, 16 teeth in the lower jaw.