In this question, three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows/follow
from the statements.
Statements:
Some watches are clocks.
All clocks are black.
All black are big.
Conclusions:
I. Some watches are big.
II. Some watches are black.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. Both conclusions I and II follow.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some watches are big → True (As some watches are clocks, all clocks are black, and all blacks are big, so, some watches are big is also true.)
II. Some watches are black → True (As some watches are clocks, all clocks are black, so, some watches are black is also true)
Hence, Both conclusions I and II follow.