18 students are surveyed about owning cats and or dogs 9 students have dogs, 6 students have cats only 10 students have cats how many students do not have a cats or dogs?

a-2
b-3
c-4
d-18

A) 9 students have dogs.

b) 6 students have cats only

c) 10 students have cats.

From (c) since 10 have cats and 6 have only cats it means 4 students have cats and dogs.

From (a) since 9 students have dogs, and 4 have cats and dogs, it means 5 have only dogs.

Only dogs  + Only cats + both cats and dogs + Neither = Total

5 + 6 + 4 + x = 18

15 + x = 18

x = 18 - 15

x =3

B.