NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 1 2016

RRB NTPC · Question 21

Below are given statements. You have to take the given statements to be true even if they seem to be at variance with the commonly known facts and then decide which of the given conclusions logically follows from the given statements. Statements: I. All rats are hills. II. All hills are rivers.

  1. Some rivers are rats

  2. No river is a hill

  3. All hills are rats

  4. No river is a rat

Show answer & explanation

Answer: (A) Some rivers are rats

Explanation

All rats are hills and all hills are rivers, so all rats are rivers. If all rats are rivers, then some rivers are rats (the conversion of 'All A are B' to 'Some B are A'). The other options contradict the statements or go beyond them.