Statement: A company is hiring only engineers. Conclusions: I. No non-engineer will be hired. II. All engineers will be hired. MCQ with Answer and Explanation

Explanation:
Spectacles may be for reading or fashion, not necessarily poor eyesight. Looks intelligent is a stereotype, not a logical conclusion. Neither follows.

Explanation:
I: she may not be topper if someone else scored 100%. II: hard work not necessarily; could be luck. Neither follows.

Explanation:
Smoking increases risk but doesn't guarantee cancer, so I does not follow. Teeth staining is a common effect, so II is possible and thus follows as a probable conclusion.