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All professors are researchers Some scientists are professors Which of the given conclusions is logically valid and is inferred from the above arguments:

  1. All scientists are researchers
  2. All professors are scientists
  3. Some researchers are scientists
  4. No conclusion follows
in Verbal Ability by Boss (41.9k points)
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the answer should be option C.

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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:-

by Active (4k points)
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excellent explanation easy and simple
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Good answer.
+3 votes
Answer C:  If some scientists are professors and all professors are researchers, then that means that some scientists are researchers.
by Veteran (52.2k points)
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nice explanation.
Answer:

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