Quantitative Methods

Been given an example and would like some help I am new to Quantitative Methods nd Statistics, the Assisgnment is as follows:


The Universal set this problem is a set of studenst at WUA.
Let M denote the set of Maths majors.
Let CS denote the set of Computer Science majors.
Let T denote the set of students who had a test on Friday.
Let P denote those students who ate pizza last Thursday.

Rewrite the following assertations using set theoretical notation.
Questions
a- Computer Science majors had a test on Friday [4]
b- No Maths major ate pizza last Thursday [4]
c- One or more Maths Majors did not eat pizza last Thusrday [4]
d- Those Computer Science majors who did not have a test on Fridayand ate pizza on Thursday [4]
e- Maths or Computer Science majors who ate pizza on Thursday did not have a test on Friday [4].

Do you know how " ", intersection of sets, and " ", union of sets, are definedf?