Verbal Reasoning - Syllogism - Discussion

Discussion Forum : Syllogism - Syllogism 2 (Q.No. 3)
Directions to Solve
In each of the following questions two statements are given. Which are followed by four conclusions (1), (2), (3) and (4). Choose the conclusions which logically follow from the given statements.


Statements: All men are vertebrates. Some mammals are vertebrates.


  1. All men are mammals.
  2. All mammals are men.
  3. Some vertebrates are mammals.
  4. All vertebrates are men.

Only (4)
Only (2)
Only (3)
Only (1)
Only (1) and (3)
Answer: Option
26 comments Page 1 of 3.

Akash said:   1 decade ago
why can't all men who are vertebrates, also be mammals? In my opinion, there are three possibilities, not two.

Kiran makwana said:   1 decade ago
Third possibility is that no mammals can be vertebrates or men.

Rams said:   10 years ago
What about the possibility of some men are mammals?

Puneetsingh said:   9 years ago
All men are mammals also be true answer.

Tanmay said:   9 years ago
Sir I didn't understand the 2nd diagram. Here we can't tell that some mammals are men too. That not given in statement. As I know that we can't think anything extra that's not given. Is it a case of possibility ?

Anki said:   9 years ago
Where & how to use all+some = No conclusion.

Ravinder kumar said:   9 years ago
Hello @Anki,

Here terms are "All men" and "Some Mammals" and they will always give no conclusion as they represent different categories. Solve Syllogism problems (including possibility type) in few seconds.

Mike said:   9 years ago
Why "all men are mammal" isn't correct?

Sumair said:   9 years ago
There should be three diagrams, all mans are mammals can be true if the diagram of circle of mammal in diagram 2 is increased.

SUPRAJ said:   8 years ago

-UNTIL the STATEMENT is given that some men are mammals or all men are mammals or vice versa. We cannot conclude the CONCLUSION to be correct.

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