“A tiger is a cat, and a cat has two legs.”
Does "An ostrich is a bird, and a bird has two legs" have the same truth value as the above statement?

Or would it be one of the other options which are :
1)A poodle is a dog, or a poodle has two eyes.
2)A poodle is a cat, and a dog has four legs.
3)An ostrich is a bird, or all birds can fly

Question

“A tiger is a cat, and a cat has two legs.”
Does "An ostrich is a bird, and a bird has two legs" have the same truth value as the above statement?

Or would it be one of the other options which are :
1)A poodle is a dog, or a poodle has two eyes. 
2)A poodle is a cat, and a dog has four legs. 
3)An ostrich is a bird, or all birds can fly

experimentx · Answer

I thought cat has four legs!!

anonymous · Answer

it does

anonymous · Answer

this is messing with my mind, but i think 1)   ?

experimentx · Answer

if it were four legs, then i think the "An ostrich is a bird, and a bird has two legs" would have same logic.

anonymous · Answer

the question was originally "“A tiger is a cat, and a cat has two legs.”
 
Which statement has the same truth value as the above statement?"

experimentx · Answer

Sorry, I would like to correct that. didn't see or.

experimentx · Answer

@eigenschmeigen what do you think???

anonymous · Answer

I would think it would be " an ostrich is a bird and a bird has two legs" because it's laid out the same

experimentx · Answer

Is it English or mathematics?? From the point of view of boolean algebra 2 is correct.

anonymous · Answer

"A tiger is a cat, and a cat has two legs"
is a false statement, and so has "different truth" to:
"An ostrich is a bird, and a bird has two legs"

1)A poodle is a dog, or a poodle has two eyes. 
2)A poodle is a cat, and a dog has four legs. 
3)An ostrich is a bird, or all birds can fly

can we rule out the true ones? 

that's my thoughts so far
its kinda hard as i dont know the definition of "the same truth value"

anonymous · Answer

oooh look here: http://en.wikipedia.org/wiki/Truth-value_link

anonymous · Answer

nope nevermind that doesnt really help

anonymous · Answer

This is mathematics, it has to do with proofs

experimentx · Answer

2)A poodle is a cat, and a dog has four legs.  <--- false statement.

anonymous · Answer

I was just thinking that. It would have to be it since it's both false and true

experimentx · Answer

3)An ostrich is a bird, OR all birds can fly <-- one of them is true, so it's true.

anonymous · Answer

This is logic.

experimentx · Answer

2)A poodle is a cat, AND a dog has four legs.  <--- one of them is false so both are false.

anonymous · Answer

wouldn't it have to be a conditional statement like the one given?

anonymous · Answer

and 2 is a conditional statement

experimentx · Answer

No, it's about AND and OR,
OR means if one of them is correct, whole statement is correct
AND means both of them has to be correct to be true.

anonymous · Answer

ok. then what would the answer be

experimentx · Answer

!-_-!
read above.

anonymous · Answer

My best guess "A poodle is a cat, and a dog has four legs"

anonymous · Answer

Ok, then I had the correct answer down. I got confused before.

anonymous · Answer

which is the correct answer by your book?

anonymous · Answer

a poodle is a cat, and a dog has four legs

experimentx · Answer

I never had heard of poodle before ... lol.
If it is mathematics, not english then i think it must be what FFM says.

anonymous · Answer

Great! I was right :)

experimentx · Answer

You are barely wrong to begin with.

anonymous · Answer

The reason is in the first statement  one is true and other is false joined by and and the 2nd option only matches this truth-value.

experimentx · Answer

yes it is ... if it were English i would have said the default one.