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Discussion

Given below are two statements followed by two conclusions. Assuming these statements to be true, decide which one logically follows.

Statements:
I. No manager is a leader.
II. All leaders are executives.

Conclusions:
I. No manager is an executive.
II. No executive is a manager.

  • A.Only conclusion I follows.
  • B.Only conclusion II follows.
  • C.Neither conclusion I nor II follows.
  • D.Both conclusions I and II follow.

Answer: C

Neither conclusion I nor II follows.

Statement I keeps managers and leaders apart; statement II puts all leaders inside the set of executives. Nothing says anything about managers and executives directly: managers may be executives who are not leaders, or they may not be executives at all.

So 'No manager is an executive' does not follow, and neither does 'No executive is a manager', which says the same thing. Both are possible but not certain, so options claiming either or both follow are wrong.

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