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A veterinarian surveys 26 of his patrons. He discovers that 14 have dogs, 10 have cats, and 5 have fish.
Four have dogs and cats, 3 have dogs and fish, and one has a cat and fish. If no one has all three kinds
of pets, how many patrons have none of these pets?

Read Solution (Total 2)

13-ans
14-4-3-0=7
10-4-0-1=5
5-3-1-0=1
7+5+1=13
total=26

so 26-13=13
10 years agoHelpfull: Yes(3) No(4)

2-ans
14-4-3-0=7
10-4-0-1=5
5-3-1-0=1
7+5+1+4+3+1=21
So 26-21=5
8 years agoHelpfull: Yes(3) No(0)

CTS Other Question

Find the correct sentence.

A) The teaching staff must take their lectures regularly when are asked by the Principal

B) The teaching staff had taken the lectures regularly had they known that the Principal would come to know
about it.

C) The teaching staff would have taken lectures regularly had they known that the Principal would know about it.

D) Many irregularities were found in their lectures by the Principal and he could not be disregarded them. Using the digits 1,5,2,8 four digit numbers are formed and the sum of all possible such numbers.