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Saturday, 3 October 2015

Reasoning Ability Answer with Explanation Syllogism -IBPS & SBI Bank Exam

In each of the questions below consists of a statements  and conclusion numbered I and II given below it.You decide which of the two conclusion logically follows from the information given in the statement
Give answer
  • (1)if only conclusion (I) follows
  • (2) if only conclusion (II) follows
  • (3) If a either conclusion (I) or (II) follows
  • (4) If a neither conclusion (I) nor (II) follows
  • (5) If both  conclusion (I) and (II) follows
1.Statements: All animal are birds
                      All bird are crows.
Conclusion:   I. All animals are crows.
                    II.All crows are true

2.Statements: Some tricks are magic.

                      All magic are true.
Conclusion: I. There is a possibility that all tricks are true.
                  II.There is a possibility that all magic are tricks.

3..Statements: All e-mails are messages.

                     Some messages are letters.
Conclusion: I. Atleast some letters are e-mails.
                  II. Some messages are not e-mails.

4..Statements: Some threads are cottons.

                      Some cottons are nylons.
Conclusion: I. All nylons are threads.
                  II. Atleast some nylons are threads.

5..Statements: Some clocks are watches.

                      No clock is a wall.
Conclusion:  I All walls are watches.
                   II There is a possibility that all watches are clocks.




 Answer
[i]All animal are birds ---->A-type
[ii]Some tricks are magic----> I-type
[iii] No clock is a wall.-----> E- type
[iv]Some messages are not e-mails.---->O - type

1.[1] All animal are birds[A]
         All bird are crows.[A]
A+A =>A- type on conclusion
   All animal are crows

 only conclusion (I) follows

2.[4] Some tricks are magic.[I]

           All magic are true.[A]
I +A => I - type of conclusion
  Some tricks are true

3.[4] All e-mails are messages[A]
          Some messages are letters.[I]
A+I => No Conclusion

4[4]Both the Premises are Particular Affirmative [I- type]No Conclusion follows from the two Particular Premises.

5.[4]Some clocks are watches.[I]

       No clock is a wall.[E]
I+E => O -type of conclusion




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