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Logical Reasoning - Logical Deduction

Overview

Exercise

"Weakness of attitude becomes weakness of character."
- Albert Einstein
Directions to Solve

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

Give answer:

  • (A) If only conclusion I follows
  • (B) If only conclusion II follows
  • (C) If either I or II follows
  • (D) If neither I nor II follows and
  • (E) If both I and II follow.

11. 

Statements: All fish are tortoise. No tortoise is a crocodile.

Conclusions:

  1. No crocodile is a fish.
  2. No fish is a crocodile.
A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow
12. 

Statements: Some dedicated souls are angels. All social workers are angels.

Conclusions:

  1. Some dedicated souls are social workers.
  2. Some social workers are dedicated souls.
A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow
13. 

Statements: No gentleman is poor. All gentlemen are rich.

Conclusions:

  1. No poor man is rich.
  2. No rich man is poor.
A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow
14. 

Statements: Some swords are sharp. All swords are rusty

Conclusions:

  1. Some rusty things are sharp.
  2. Some rusty things are not sharp.
A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow
15. 

Statements: All fishes are grey in colour. Some fishes are heavy.

Conclusions:

  1. All heavy fishes are grey in colour.
  2. All light fishes are not grey in colour.
A. Only conclusion I follows
B. Only conclusion II follows
C. Either I or II follows
D. Neither I nor II follows
E. Both I and II follow

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