---------. .-------.
"All m are x; | | | |(I)| |
All m are y. | .---|---. | |---|---|
Some x are y." | |(I)|(O)| | | | |
|---|---|---|---| .-------.
| |(O)|(O)| |
| .---|---. | .'. "Some x are y."
| | |
.---------------.

Hence proposed Conclusion is right.

(2)

"I admire these pictures;
When I admire anything I wish to examine it thoroughly.
I wish to examine some of these pictures thoroughly."

Univ. "things"; m = admired by me; x = these pictures; y = things which
I wish to examine thoroughly.

.---------------. .-------.
"All x are m; |(O) | (O)| |(I)|(O)|
All m are y. | .---|---. | |---|---|
Some x are y." | |(I)|(O)| | | | |
|---|---|---|---| .-------.
| | |(O)| |
| .---|---. | .'. "All x are y."
| | |
.---------------.

Hence proposed Conclusion is _incomplete_, the _complete_ one being "I
wish to examine _all_ these pictures thoroughly".

(3)

"None but the brave deserve the fair;
Some braggarts are cowards.
Some braggarts do not deserve the fair."

Univ. "persons"; m = brave; x = deserving of the fair; y = braggarts.

.---------------. .-------.
"No m' are x; |(O) | (O)| | | |
Some y are m'. | .---|---. | |---|---|
Some y are x'." | | | | | |(I)| |
|---|---|---|---| .-------.
| | | | |
| .---|---. | .'. "Some y are x'."
|(I) | |
.---------------.

Hence proposed Conclusion is right.
pg068
(4)

"All soldiers can march;
Some babies are not soldiers.
Some babies cannot march".

Univ. "persons"; m = soldiers; x = able to march; y = babies.

.---------------.
"All m are x; | | |
Some y are m'. | .---|---. |
Some y are x'." | | (I) | |
|(I)|---|---|---|
|