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Question : Directions: In this question, three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows/follow from the statements
Statements:
I. No dean is a teacher.
II. All teachers are professors.
III. No professor is a lecturer.
Conclusions:
I. Some deans are lecturers.
II. Some teachers are lecturers.

Option 1: Only conclusion II follows

Option 2: Only conclusion I follows

Option 3: Both conclusions I and II follow

Option 4: Neither conclusion I nor II follows


Team Careers360 16th Jan, 2024
Answer (1)
Team Careers360 17th Jan, 2024

Correct Answer: Neither conclusion I nor II follows


Solution : The possible Venn diagram according to the given statements is as follows –


Let's analyze the conclusions –
Conclusion I: Some deans are lecturers – From the Venn diagram, it is evident that there is no definite relation between deans and lecturers. Thus, this conclusion does not follow.
Conclusion II: Some teachers are lecturers – Since no professor is a lecturer and all teachers are professors, so some teachers can never be lecturers. Thus, this conclusion does not follow.

So, neither conclusion I nor II follows. Hence, the fourth option is correct.

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