Logical Deduction

Directions to SolveIn each of the following questions, three statements are given followed by four conclusions numbered I, II, III and TV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Q1: Statements: No table is fruit. No fruit is window. All windows are chairs. Conclusions:
  1. No window is table.
  2. No chair is fruit.
  3. No chair is table.
  4. All chairs are windows.

A None follows

B Only I and II follow

C Only III and IV follow

D All follow

E None of these

ANS:A - None follows

Explanation: No table is fruit. No fruit is window. Since both the premises are negative, no definite conclusion follows. No fruit is window. All windows are chairs. Since the middle term 'windows' is distributed twice and one premise is negative, the conclusion must be particular negative. So, it follows that 'Some chairs are not fruits'.



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