Answer: 29
Step-by-step explanation:
Let S denotes the total number of people surveyed, A denotes the event of having dog , B denotes the event of having cats and C denotes the event of having fish.
Given : n(S)=50 ;n(A)=11 ; n(B) =13 and n(C)=6
Also, n(A∩B)=5 ; n(A∩C) = 2 and n(B∩C)=3 and n(A∩B∩C)=1
We know that,

Now, the number of people owned none of these pets :-

Hence, the number of people owned none of these pets =29
Answer:
B. W - 5
Step-by-step explanation:
The length is shorter than the width of the swimming pool by 5.
Width = W
Therefore the length of the pool would be W - 5
Option C and D is correct .....
The answer is x<2
-2x^5 + 14x^4 - 36x^3 + 52x^2 - 64x + 48=0