Logical Reasoning Questions for MCA, MBA Exams - 1

Question: 1

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.
Statements :
All dresses are shoes.
II. No shoe is brown.
Conclusions :
I. No dresses are brown.
II. Some shoes are dresses.

(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

Ans: A

Since one premise is negative, the conclusion must be negative. So, only conclusion I follows.

Question: 2

Statements :
I. All boys are honest.
II. Sachin is a boy.
Conclusions :
I. Sachin is a boy.
II. All honest persons are boys.

(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

Ans: D

Both the premises are A type propositions. So, the middle term ‘honest’ forming the predicate in each is not distributed in either.

Since the middle term is not distributed even once, no conclusion follows.

Question: 3

Statements :
Some kites are horses.
II. All horses are dogs.
Conclusions :
I. All dogs are horses.
II. Some dogs are horses.

(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

Ans: D

None of the conclusions follows as both contain the middle term.

Question: 4

Statements :
All roads are poles.
II. No pole is house.
Conclusions :
I. Some roads are houses.
II. Some houses are poles.

(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

Ans: D

Since one premise is negative, the conclusion must be negative. So, neither conclusion follows.

Question: 5

Statements :
I. Some aeroplanes are living beings.
II. Some non living beings are ghosts.
Conclusions :
I. Some aeroplanes are ghosts.
II. Some aeroplanes are not ghosts.

(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

Ans: D

Since both the premises are particular, no conclusion follows.

Related Questions