Correct, except that you missed out the .No student in your class has a cat, a dog, and a ferret.
No. You can re-phrase it as "Someone owns a cat AND someone owns a dog AND someone owns a ferret". So you get:For each of the three animals, cats, dogs, and ferrets, there is a student in your class who has one of these animals as pets.
A little unsure about this one.
I'm sure you can complete it now.
Correct.The next question:
P(x): "x is a duck"
Q(x): "x is one of my poultry"
R(x): "x is an officer"
S(x): "x is willing to waltz"
No ducks are willing to waltz.
No. This means "If you're not an officer, then you're not willing to waltz."No officers ever decline to waltz.
"No officers ever decline to waltz" simply means "Every officer is willing to waltz". So
Both of these are correct!All my poultry are ducks.
My poultry are not officers.