RBI GRADE ‘B’ OFFICER’S EXAM Held on : 18.12.2011 (Part-IV)

11. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Statements :

Some colours are paints.

All colours are varnishes.

No varnish is dye.

Conclusions :

I. No paint is dye.

II. All paints being varnishes is a possibility.

Correct Answer: (2)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

Some paints are colours.

All colours are varnishes.

I + A $\Rightarrow$ I-type of Conclusion

"Some paints are varnishes."(P)

All colours are varnishes.

No varnish is dye.

A + E $\Rightarrow$ E-type of Conclusion

"No colour is dye." (Q)

Some paints are varnishes.

No varnish is dye.

I + E $\Rightarrow$ O-type of Conclusion

"Some paints are not dye." (R)

Some paints are varnishes.
Therefore, Conclusion II is possible.

12. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Some colours are paints.

All colours are varnishes.

No varnish is dye.

Conclusions :

I. Some varnishes are paints.

II. No dye is colour.

Statements :

All squares are triangles.

No triangle is circle.

All circles are rectangles.

Correct Answer: (5)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

Some paints are colours.

All colours are varnishes.

I + A $\Rightarrow$ I-type of Conclusion

"Some paints are varnishes."(P)

All colours are varnishes.

No varnish is dye.

A + E $\Rightarrow$ E-type of Conclusion

"No colour is dye." (Q)

Some paints are varnishes.

No varnish is dye.

I + E $\Rightarrow$ O-type of Conclusion

"Some paints are not dye." (R)

Conclusion I is Converse of
Conclusion (P).

Conclusion II is Converse
Conclusion (Q).

13. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Conclusions :

I. No rectangle is square.

II. All rectangles being square is a possibility.

Correct Answer: (4)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

All squares are triangles.

No triangle is circle.

A + E $\Rightarrow$ E-type of Conclusion

"No square is circle." (P)

No triangle is circle.

All circles are rectangles.

E + A $\Rightarrow$ O₁-type of Conclusion

"Some rectangles are not triangles.

"(Q) No square is circle.

All circles are rectangles.

E + A $\Rightarrow$ O₁- type of Conclusion

"Some rectangles are not squares." (R)

None follows.

14. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Conclusions :

I. No square is circle.

II. Atleast some circles are squares.

Correct Answer: (1)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

All squares are triangles.

No triangle is circle.

A + E $\Rightarrow$ E-type of Conclusion

"No square is circle." (P)

No triangle is circle.

All circles are rectangles.

E + A $\Rightarrow$ O₁-type of Conclusion

"Some rectangles are not triangles.

"(Q) No square is circle.

All circles are rectangles.

E + A $\Rightarrow$ O₁- type of Conclusion

"Some rectangles are not squares." (R)

Conclusion I is converse of Conclusion (P).

15. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Statements :

No paper is book.

Some books are libraries. Conclusions :

I. All libraries being books is a possibility.

II. No library is paper.

Correct Answer: (1)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

No paper is book.

Some books are libraries.

E+I $\Rightarrow$ O₁- type of Conclusion

"Some libraries are not papers.

" Conclusion I may be derived from the second Premise.

16. In each question below are two/three statements followed by two conclusions numbered I and II. You have to take the two/three 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 conclusion II follows.

Give answer (4) if neither conclusion I nor conclusion II follows.

Give answer (5) if both conclusion I and conclusion II follow.

Statements :

All hills are mountains.

All mountains are rocks.

Conclusions :

I. All those rocks which are mountains are also hills.

II. All hills are rocks.

Correct Answer: (5)

Solution:(i) All colours are varnishes

\to

Universal Affirmative (A-type).

(ii) Some colours are paints $\to$

Particular Affirmative (I-type).

(iii) No triangle is circle $\to$

Universal Negative (E-type).

(iv) Some triangles are not circles $\to$

Particular Negative (O-type).

All hills are mountains.

All mountains are rocks.

A+A $\Rightarrow$ A- type of Conclusion

"All hills are rocks.

" It is Conclusion II.

Conclusion I also follows.

17. Study the following information to answer the given questions:

Eight people viz. A, B, C, D, E, F, G and H are sitting in a straight line facing North. Each one of them has passed a recruitment exam and must join the office on different months viz. January, February, March, April, May, June, July and August but not necessarily in the same order.

• G sits third to the right of the person who joins in May. The person who joins in August sits second to the right of G. A and E are immediate neighbours of each other. Neither A nor E has joining dates either in May or August. Neither A nor E is an immediate neighbour of G.

• H sits third to the right of the person whose joining date is in January. Neither A nor E has joining dates in January. H's joining date is not in August.

• Only two people sit between E and the person whose joining date is in July. The person whose joining date is in February sits to the immediate left of D.

• Only one person sits between E and B. C joins on one of the months before July. E joins after April. G joins after A.

On which of the following months does H join the office?

Correct Answer: (4) February

Solution:

H joins the office in February.

18. Study the following information to answer the given questions:

Eight people viz. A, B, C, D, E, F, G and H are sitting in a straight line facing North. Each one of them has passed a recruitment exam and must join the office on different months viz. January, February, March, April, May, June, July and August but not necessarily in the same order.

• G sits third to the right of the person who joins in May. The person who joins in August sits second to the right of G. A and E are immediate neighbours of each other. Neither A nor E has joining dates either in May or August. Neither A nor E is an immediate neighbour of G.

• H sits third to the right of the person whose joining date is in January. Neither A nor E has joining dates in January. H's joining date is not in August.

• Only two people sit between E and the person whose joining date is in July. The person whose joining date is in February sits to the immediate left of D.

• Only one person sits between E and B. C joins on one of the months before July. E joins after April. G joins after A.

Who amongst the following sits exactly between E and B ?

Correct Answer: (1) The person whose joining date is in May

Solution:

C sits exactly between E and
B. C joins in May.

19. Study the following information to answer the given questions:

Eight people viz. A, B, C, D, E, F, G and H are sitting in a straight line facing North. Each one of them has passed a recruitment exam and must join the office on different months viz. January, February, March, April, May, June, July and August but not necessarily in the same order.

• G sits third to the right of the person who joins in May. The person who joins in August sits second to the right of G. A and E are immediate neighbours of each other. Neither A nor E has joining dates either in May or August. Neither A nor E is an immediate neighbour of G.

• H sits third to the right of the person whose joining date is in January. Neither A nor E has joining dates in January. H's joining date is not in August.

• Only two people sit between E and the person whose joining date is in July. The person whose joining date is in February sits to the immediate left of D.

• Only one person sits between E and B. C joins on one of the months before July. E joins after April. G joins after A.

'H' is related to 'July' in a certain way based on the above arrangement. 'B' is related to 'June' following the same pattern. ______ is related to 'May' following the same pattern.

Correct Answer: (1) F

Solution:

H is second to the right of the person who joins in July.

B is second to the right of the person who joins in June.
F is second to the right of the person who joins in May.

20. Study the following information to answer the given questions:

Eight people viz. A, B, C, D, E, F, G and H are sitting in a straight line facing North. Each one of them has passed a recruitment exam and must join the office on different months viz. January, February, March, April, May, June, July and August but not necessarily in the same order.

• G sits third to the right of the person who joins in May. The person who joins in August sits second to the right of G. A and E are immediate neighbours of each other. Neither A nor E has joining dates either in May or August. Neither A nor E is an immediate neighbour of G.

• H sits third to the right of the person whose joining date is in January. Neither A nor E has joining dates in January. H's joining date is not in August.

• Only two people sit between E and the person whose joining date is in July. The person whose joining date is in February sits to the immediate left of D.

• Only one person sits between E and B. C joins on one of the months before July. E joins after April. G joins after A.

Which of the following is true regarding D ?

(1) Only two people sit to the left of D
(2) D is sitting second to the right of the person whose joining date is in July
(3) E and B are immediate neighbours of D
(4) D's joining date is in May
(5) None is true

Correct Answer: (2) D is sitting second to the right of the person whose joining date is in July

Solution:

Seven people sit to the left of D.
H is immediate neighbour of D.
D's joining date is in August.

RBI GRADE ‘B’ OFFICER’S EXAM Held on : 18.12.2011 (Part-IV)

17. Study the following information to answer the given questions:

18. Study the following information to answer the given questions:

19. Study the following information to answer the given questions:

20. Study the following information to answer the given questions:

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