GATE2013 AE: GA-9

Question

• All professors are researchers
• Some scientists are professors

Which of the given conclusions is logically valid and is inferred from the above arguments?

• A. All scientists are researchers
• B. All professors are scientists
• C. Some researchers are scientists
• D. No conclusion follows

Comments

the answer should be option C.

Answer 1

Answer is (C)Some researchers are scientists.For these type of questions we can always follow the Venn diagram approach.

All professors are Researchers.So,we draw a circle inside researchers and name it professors.Some scientists are professors.So,we draw something like below:-

Clearly we can see some researchers are scientists which is option(C) 

Below are some useful Venn diagrams for questions of this type:-

Comments

excellent explanation easy and simple

---

Good answer.

Answer 2

Answer C:  If some scientists are professors and all professors are researchers, then that means that some scientists are researchers.

Comments

nice explanation.