• Reasoning Ability - Syllogisms
Question

Statements : All pens are pencils
                       No pencil is an eraser
 
Conclusions : I.    No eraser is a pen
                        II.  No pen is an eraser

  • A) Conclusion I follows.
  • B) Conclusion II follows.
  • C) if either conclusion I or conclusion II follows
  • D) Both conclusion I and conclusion II follow.
Solution
D

All pens are pencils (A) + No eraser is a pen (E) = A + E = E = “No pen is an eraser”
 
This is Conclusion II.

Conclusion I is the Converse of it i.e.

No eraser is a pen.
 
Hence, both conclusion I and II follows.

Hence, option D is correct.

D

All pens are pencils (A) + No eraser is a pen (E) = A + E = E = “No pen is an eraser”
 
This is Conclusion II.

Conclusion I is the Converse of it i.e.

No eraser is a pen.
 
Hence, both conclusion I and II follows.

Hence, option D is correct.
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