RRB NTPC · Question 116
Below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with the commonly logically follow(s) from the given statements. Statements: 1. All dogs are cats. 2. No cats are rats. Conclusions: I. All rats are dogs. II. Some dogs are rats.
Show answer & explanation
Answer: (C) Neither I nor II follows.
Explanation
All dogs are cats and no cat is a rat, so no dog is a rat – II is false. 'All rats are dogs' contradicts this, so I is false too. Neither follows.