1What is modulus and how does it relate to division? Illustrate with an example.

2.What is factorial and how does it relate to multiplication? Illustrate with an example.

3.Can you calculate the 4th root of a number with Postgres? If yes show how, if not explain why.

4.By adding 1 set of parenthesis, how many unique results can you get from the expression 2/3+5*4 ?

Computer sciense