Question

a) How many Professors are Doctors but not Singers?

(1) 12 (2) 11

(3) 15 (4) 13
   
b)how many are doctors but not singers?

1)10    2) 28  3)63  4)61

c) How many Singers are Doctors as well as Professors?

(1) 15 (2) 11

(3) 13 (4) 10

d) How many Doctors are not Singers?

(1) 50 (2) 78

(3) 79 (4) 63

e)How many persons are either Professors or Singers 

but not both?

(1) 34 (2) 48

(3) 68 (4) 74​

Answer 1

Answer:

Answer of Question a is option no 3 ie 15

a) 3

b) 3

c) 4

d) 4

e) 4