syllogism Model Questions & Answers, Practice Test for rbi grade b prelims 2024

Directions:

In each of the questions below are given three statements followed by the conclusions numbered I, II, III & IV. 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 follow from the given statements.

Question :6

Statements :Some tables are chairs.
No cupboard is table.
Some chairs are cupboards.


Conclusion:
I. Some chairs are not tables.
II. All chairs are either tables or cupboards.
III. Some chairs are tables.
IV. All chairs are tables.

Answer: (a)

Statements: Some tables are chairs.

Conclusion: Some chairs are tables. (conversion)

Hence, III follows.

Statements: No cupboard is table.

Conclusions :Some cupboards are not table. (Implication)

No table is cupboard. (conversion)

Statements: Some chairs are cupboards.

Conclusions :Some cupboards are chairs. (conversion)

Since, No table is cupboard.

Some cupboards are chairs.

Conclusion: Some chairs are not table.

(E + I = O* type)

Hence, I follows.

Question :7

Statements :Some pots are buckets.
Some buckets are bags.
Some bags are purses.


Conclusion:
I. Some purses are buckets.
II. Some bags are pots.
III. Some purses are pots.
IV. Some pots are bags.

Answer: (c)

Statements: Some pots are buckets

Conclusion: Some buckets are pots. (conversion)

Statements: Some buckets are bags.

Conclusion: Some bags are buckets. (conversion)

Statements: Some bags are purses.

Conclusion: Some purses are bags. (conversion)

No mediate inference follows.

∴ No given Conclusions follows.

Question :8

Statements :No man is sky.
No sky is road.
Some men are roads.


Conclusion:
I. No road is man.
II. No road is sky.
III. Some skies are men.
IV. All roads are men.

Answer: (d)

Statements: No man is sky.

Conclusions :Some men are not sky. (Implication)

No sky is man. (conversion)

Statements: No sky is road.

Conclusions :Some skies are not road. (Implication)

No road is sky. (conversion)

Hence II follows.

Statements :Some men are roads.

Conclusions :Some roads are men. (conversion)

No sky is man.

Some men are roads.

Some roads are not sky.

(E + I = O* type)

No sky is road.

Some roads are men.

Some men are not sky.

(E + I = O* type)

Statements :Some men are roads.

No road is sky.

Conclusion: Some men are not sky. (I + E = O type)

Statements :Some roads are men.

No man is sky.

Conclusions :Some roads are not sky.

(I + E = O type)

Hence, only II follows

Question :9

Statements :Some ice are ring.
No ring is paint.
Some rings are gold.


Conclusion:
I. No gold is paint.
II. No ice is gold.
III. Some rings are paints.
IV. All golds are ring.

Answer: (b)

Statements: Some ice are ring.

Conclusion: Some ring are ice. (conversion)

Statements: Some rings are gold.

Conclusion: Some gold are ring. (conversion)

Statements: No ring is paint.

Conclusion: Some gold are not paint. (I + E = O-type)

Statements: Some ice are ring.

No ring is paint.

Conclusion: Some ice are not paint.

(I + E = O-type )

Statements: No ring is paint.

Conclusion: No paint is ring. (Implication)

Hence none follows.

Question :10

Statements :All glasses are roads.
No road is stick.
Some sticks are pens.


Conclusion:
I. Some glasses are sticks.
II. Some pens are sticks.
III. Some roads are sticks.
IV. No glass is a stick.

Answer: (d)

Statements: All glasses are roads.

No road is stick.

Conclusion: No glass is stick. (A + E = E-type)

Statements: Some sticks are pens.

Conclusion: Pens are not glass.

(E + I = O* type)

Statements: No road is stick.

Some sticks are pens.

Conclusion: Some pens are not road.

(E + I = O* type)

Hence only IV follows.

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