4
Q:

All dolls are windows.All bottles are windows.All cars are bottles.

1. All cars are windows

2. some cars are dolls

3. some windows are cars

Which among the above listed are true

A) only 1 and 2 follow B) only 2 and 3 follow
C) only 1 and 3 follow D) all follow

Answer:   C) only 1 and 3 follow



Explanation:

All cars are bottles.All bottles are windows.

 

Since both premises are universal,the conclusion must be universal and should'nt contain the middle term.So it follows that 'All cars are windows'.Thus,1 follows.Also 3 is the converse of this conclusion and hence it holds