There are total of 50 pet lovers :)
Let D= {Pet lovers who have dogs}
F= {Pet lovers who have fish}
C= {Pet lovers who have cat}
16. How many pet lovers have dogs and fish?
a. 8
b. 13
c. 20
d. 27
17. How many pet lovers have dogs and cats?
a. 31
b. 26
c. 23
d. 42
18. How many pet lovers have fish and cats but not dogs?
a. 7
b. 3
c. 1
d. 0
19. How many pet lovers have dogs and fish but not cats?
a. 7
b. 12
c. 19
d. 32
20. How many pet lovers have all three pets?
a. 1
b. 5
c. 6
d. 7
21. How many pet lovers have neither one of the three pets?
a. 7
b. 6
c. 3
d. 0
Let D= {Pet lovers who have dogs}
F= {Pet lovers who have fish}
C= {Pet lovers who have cat}
16. How many pet lovers have dogs and fish?
a. 8
b. 13
c. 20
d. 27
17. How many pet lovers have dogs and cats?
a. 31
b. 26
c. 23
d. 42
18. How many pet lovers have fish and cats but not dogs?
a. 7
b. 3
c. 1
d. 0
19. How many pet lovers have dogs and fish but not cats?
a. 7
b. 12
c. 19
d. 32
20. How many pet lovers have all three pets?
a. 1
b. 5
c. 6
d. 7
21. How many pet lovers have neither one of the three pets?
a. 7
b. 6
c. 3
d. 0
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