Is this correct?


A -m-> B
B --> C
Therefore .. A -m-> C

A --> B
A -m-> C
B <-s-> C



If so, why is the second equation some and not most?

Thank you!

I'm confused, isn't D just as valid an answer as E ?

The diagram is :

N some O
-O<---> -P
-P <---> - Q
Q ---> R

I know the inferences are :

N some - P
R some -P

But aren't these also valid inferences

N some - Q
N some - R
R some - O ??

Why must she lecture on Tuesday?

Isn't it possible that she lectures on Wednesday and Friday and treats patients on Tuesday?

TTLLT

Can we get some confirmation here?