Dental formula in human beings is

1. 32233223

2. 21232123

3. 12321232

4. 22332233

(b) An adult human has 32 permanent teeth which are of four different types, namely Incisors (I), Canine (C), Premolar (PM) and Molar (M). Arrangement of teeth in each half of the upper and lower jaw in the order I,C,PM,M is represented by a dental formula, which in humans is 21232123.