Logic homework help

Watch
Announcements
#1
A1. If Abraham Lincoln was French then the Moon is made of green cheese.
2. Abraham Lincoln was French.
3. Therefore, the moon is made of green cheese.

B 1. The Washington Redskins are better than the Miami Dolphins. 2. But the Miami Dolphins are better than the Buffalo Bills. Therefore, 3. The Washington Redskins are better than the Buffalo Bills.

C 1. If all cats are black then Tiffin is black. 2. Tiffin is black. Therefore, 3. All cats are black.

D 1. If all cats are black then Zebedee is black. 2. Some cats are not black. Therefore, 3. Zebedee is not black

Does anyone know if these arguments would be considered valid or invalid? Thanks
0
4 years ago
#2
(Original post by PoppieCrean)
A1. If Abraham Lincoln was French then the Moon is made of green cheese.
2. Abraham Lincoln was French.
3. Therefore, the moon is made of green cheese.

B 1. The Washington Redskins are better than the Miami Dolphins. 2. But the Miami Dolphins are better than the Buffalo Bills. Therefore, 3. The Washington Redskins are better than the Buffalo Bills.

C 1. If all cats are black then Tiffin is black. 2. Tiffin is black. Therefore, 3. All cats are black.

D 1. If all cats are black then Zebedee is black. 2. Some cats are not black. Therefore, 3. Zebedee is not black

Does anyone know if these arguments would be considered valid or invalid? Thanks
A and B are, but think about C and D more carefully.
0
4 years ago
#3
agree. C and D - are wrong
0
X

new posts
Back
to top
Latest
My Feed

Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Poll

Join the discussion

How would you describe the quality of the digital skills you're taught at school?

Excellent (18)
8.37%
Okay (64)
29.77%
A bit lacking (81)
37.67%
Not good at all (52)
24.19%