Logical Reasoning Questions for MCA, MBA Exams - 2

Question: 6

Statements :
All goats are wolves.
II. Some wolves are tigers.
Conclusions :
I. Some goats are tigers.
II. Tigers which are wolves are not goats.

(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 the middle term is not distributed even once in the premises, no conclusion follows.

Question: 7

Statements :
Most crops are machines.
II. Some machines are fools.
Conclusions :
I. Some fools are machines.
II. Some crops are fools.

(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.

Question: 8

Statements :
Some pastries are toffees.
II. All toffees are chocolates.
Conclusions :
I. Some chocolates are toffees.
II. Some toffees are not pastries.

(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

Neither conclusion I nor II follows as both contain the middle term.

Question: 9

Statements :
Some boys are men.
II. No man is black.
Conclusions :
I. Some boys are not black.
II. Some men 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: A

Since one premise is negative, the conclusion must be negative. So, II does not follow and only I follows.

Question: 10

Statements :
I. Some books are toys.
II. No toy is red.
Conclusions :
I. Some books are red.
II. Some books are not red.

(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: B

Since one premise is negative, the conclusion must be negative. So, I cannot follow. Thus, only II follows.

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