RBI OFFICER GRADE ‘B’ PHASE-I EXAM Held on : 03.08.2014(Part-IV)

Total Questions: 50

11. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

All triangles are squares.

No square is rectangle.

Some rectangles are cones.

Conclusions :

I. Some cones are rectangles.

II. All cones are rectangles.

 

Correct Answer: (1)
Solution:(i) All triangles are squares →
Universal Affirmative (A-type).
(ii) Some rectangles are cones →
Particular Affirmative (I-type).
(iii) No square is rectangle → Universal Negative (E-type).
(iv) Some squares are not rectangles → Particular Negative (O-type).

All triangles are squares.

           

No square is rectangle.

A + E E - type of Conclusion
"No triangle is rectangle". (P)
No square is rectangle.

             

Some rectangles are cones.

E + I O₁ - type of Conclusion

"Some cones are not squares". (Q)

No triangle is rectangle.

             

Some rectangles are cones.

E + I O₁ - type of Conclusion

"Some cones are not triangles." (R)

Conclusion I is Converse of the third Premise.

12. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

All triangles are squares.

No square is rectangle.

Some rectangles are cones.

Conclusions :

I. No triangle is rectangle.

II. Some cones being triangles is a possibility.

Correct Answer: (5)
Solution:(i) All triangles are squares →
Universal Affirmative (A-type).
(ii) Some rectangles are cones →
Particular Affirmative (I-type).
(iii) No square is rectangle → Universal Negative (E-type).
(iv) Some squares are not rectangles → Particular Negative (O-type).

All triangles are squares.

           

No square is rectangle.

A + E E - type of Conclusion
"No triangle is rectangle". (P)
No square is rectangle.

             

Some rectangles are cones.

E + I O₁ - type of Conclusion

"Some cones are not squares". (Q)

No triangle is rectangle.

             

Some rectangles are cones.

E + I O₁ - type of Conclusion

"Some cones are not triangles." (R)

Conclusion I is Conclusion (P).
Conclusion (R)
Some cones are not triangles.
Its Venn diagrams

Diagrams I and II support Conclusion II.

13. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

No aim is vision.

All visions are objectives.

No objective is goal.

Conclusions :

I. All goals being aim is a possibility.

II. All aims being objective is a possibility.

Correct Answer: (4)
Solution:

No aim is vision.

         

All visions are objectives.

E + A O₁ - type of conclusion

"Some objectives are not aims". (P)

All visions are objectives.

           

No objective is goal.

A + E E - type of Conclusion

"No visions is goal". (Q)

From Negative Premises, Affirmative Conclusion does not follow.

14. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

No aim is vision.

All visions are objectives.

No objective is goal.

Conclusions :

I. No goal is vision.

II. All objectives are visions.

Correct Answer: (1)
Solution:

No aim is vision.

         

All visions are objectives.

E + A O₁ - type of conclusion

"Some objectives are not aims". (P)

All visions are objectives.

           

No objective is goal.

A + E E - type of Conclusion

"No visions is goal". (Q)

Conclusion I is Converse of the Conclusion (Q).

15. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

All years are ages.

Some years are eras.

All eras are distances.

Conclusions :

I. At least some distances are ages.

II. Some eras are definitely not years.

Correct Answer: (1)
Solution:

Some eras are years.

       

All years are ages.

I + A I - type of Conclusion

"Some eras are ages." (P)

Some years are eras.

         

All eras are distances.

I + A I - type of Conclusion

"Some years are distances." (Q)

Some ages are eras.

         

All eras are distances.

I + A I - type of Conclusion

"Some ages are distances." (R)

Conclusion I is the Converse of Conclusion (R).
Venn diagrams of Premise :
"Some years are eras."

From the venn diagrams, it is evident that Conclusion II is not valid.

16. In each question below are three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Give answer (1) if only conclusion I follows.
Give answer (2) if only conclusion II follows.
Give answer (3) if either conclusion I or II follows.
Give answer (4) if neither conclusion I or II follows.
Give answer (5) if both conclusions I and II follow.

Statements :

All years are ages.

Some years are eras.

All eras are distances.

Conclusions :

I. At least some eras are ages.

II. All distances being years is a possibility.

Correct Answer: (5)
Solution:

Some eras are years.

       

All years are ages.

I + A I - type of Conclusion

"Some eras are ages." (P)

Some years are eras.

         

All eras are distances.

I + A I - type of Conclusion

"Some years are distances." (Q)

Some ages are eras.

         

All eras are distances.

I + A I - type of Conclusion

"Some ages are distances." (R)

Conclusion I is Conclusion (P).
Converse of Conclusion (Q) is:
"Some distances are years."
Its venn diagrams would be :

Venn diagram III supports Conclusion II.

17. Study the following information carefully and answer the questions given below :

Eight persons — A, B, C, D, E, F, G and H — are sitting around a circular table facing the centre. Each one of them has a different profession viz., Doctor, Lawyer, Painter, Librarian, Architect, Engineer, Teacher and Accountant, but not necessarily in the same order. A sits third to the right of F. Only one person sits between A and C. Accountant is sitting third to the right of C. Accountant is sitting to the immediate left of Engineer. B is sitting to the immediate left of H. Three persons sit between B and Architect. D is an immediate neighbour of G. D is neither an Engineer nor an Architect. Only one person sits between Librarian and Architect. Painter is to the immediate left of Teacher. D is not a Doctor. G is neither a Librarian nor a Lawyer. Lawyer is an immediate neighbour of Architect.

What is the profession of D ?

Correct Answer: (3) Painter
Solution:

D is a Painter.

18. Study the following information carefully and answer the questions given below :

Eight persons — A, B, C, D, E, F, G and H — are sitting around a circular table facing the centre. Each one of them has a different profession viz., Doctor, Lawyer, Painter, Librarian, Architect, Engineer, Teacher and Accountant, but not necessarily in the same order. A sits third to the right of F. Only one person sits between A and C. Accountant is sitting third to the right of C. Accountant is sitting to the immediate left of Engineer. B is sitting to the immediate left of H. Three persons sit between B and Architect. D is an immediate neighbour of G. D is neither an Engineer nor an Architect. Only one person sits between Librarian and Architect. Painter is to the immediate left of Teacher. D is not a Doctor. G is neither a Librarian nor a Lawyer. Lawyer is an immediate neighbour of Architect.

Who amongst the following is a Doctor ?

Correct Answer: (5) H
Solution:

H is a Doctor.

19. Study the following information carefully and answer the questions given below :

Eight persons — A, B, C, D, E, F, G and H — are sitting around a circular table facing the centre. Each one of them has a different profession viz., Doctor, Lawyer, Painter, Librarian, Architect, Engineer, Teacher and Accountant, but not necessarily in the same order. A sits third to the right of F. Only one person sits between A and C. Accountant is sitting third to the right of C. Accountant is sitting to the immediate left of Engineer. B is sitting to the immediate left of H. Three persons sit between B and Architect. D is an immediate neighbour of G. D is neither an Engineer nor an Architect. Only one person sits between Librarian and Architect. Painter is to the immediate left of Teacher. D is not a Doctor. G is neither a Librarian nor a Lawyer. Lawyer is an immediate neighbour of Architect.

What is the position of Lawyer with respect to G ?

Correct Answer: (1) Third to the left
Solution:

E is a lawyer. E is third to the left of G.

20. Study the following information carefully and answer the questions given below :

Eight persons — A, B, C, D, E, F, G and H — are sitting around a circular table facing the centre. Each one of them has a different profession viz., Doctor, Lawyer, Painter, Librarian, Architect, Engineer, Teacher and Accountant, but not necessarily in the same order. A sits third to the right of F. Only one person sits between A and C. Accountant is sitting third to the right of C. Accountant is sitting to the immediate left of Engineer. B is sitting to the immediate left of H. Three persons sit between B and Architect. D is an immediate neighbour of G. D is neither an Engineer nor an Architect. Only one person sits between Librarian and Architect. Painter is to the immediate left of Teacher. D is not a Doctor. G is neither a Librarian nor a Lawyer. Lawyer is an immediate neighbour of Architect.

Who sit(s) exactly between the Engineer and Teacher ?

Correct Answer: (4) Accountant
Solution:

Only Accountant F is sitting between Engineer B and Teacher G.