Two statements are given, followed by four conclusions numbered I
| Two statements are given, followed by four conclusions numbered I, II, III and IV. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some Joys are Boys.
Some Boys are Toys.
Conclusions:
I. No Joys are Toys.
II. Some Joys are Toys.
III. All Joys are Toys.
IV. All Boys are Toys.
Statements:
Some Joys are Boys.
Some Boys are Toys.
Conclusions:
I. No Joys are Toys.
II. Some Joys are Toys.
III. All Joys are Toys.
IV. All Boys are Toys.
A. Only conclusion III follows
B. Conclusion I and IV follow
C. Conclusion I and II follow
D. Either conclusion I or II follows
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
The least possible Venn-diagram is-
Conclusions:
I. No Joys are Toys - (It does not follow independently as it asserts just a possibility, not surety.)
II. Some Joys are Toys - (It does not follow independently as it asserts just a possibility, not surety.)
III. All Joys are Toys - (It does not follow as it asserts just a possibility, not surety.)
IV. All Boys are Toys - (It does not follow as it asserts just a possibility, not surety.)
(Here some + no makes either-or situation).
So, either conclusion (I) or (II) follows.
Hence, the correct option is D.
