Question

no of teeths in upper jaw and lower jaw used for
1 cutting and biting teeths
2 piercing and tearing teeth
3 chewing and grinding teeth

Answer 1

UPPER JAW:
4 Incisors- For cutting and biting 
2 Canines- For piercing and tearing 
4 Premolars & 6 Molars(Including the wisdom tooth)- For chewing and grinding

LOWER JAW:
4 Incisors- For cutting and biting 
2 Canines- For piercing and tearing 
4 Premolars & 6 Molars(Including the wisdom tooth)- For chewing and grinding

Hence in total we have 16 sets of teeth in the upper jaw and 16 sets of teeth in the lower.
Which adds up to 32 sets of teeth.

Answer 2

7 for cutting and 9 for bitting