80 students were surveyed if they play piano, guitar,or violin.

8 play piano,guitar,& violin
33 play both piano and guitar
12 play both violin and guitar
39 play piano
47 play guitar
7 play violin only

a. draw a venn diagram to illustrate of problem.
b. how many play guitars only?
c. how many play piano only?
d. how many play both piano and violin?
e. how many do not play any of the three musical instrument?​