Read the given statement(s) and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statement(s).
Statements:
Some bulbs are switches.
No switch is a vase.
All fans are switches.
Conclusions:
I. Some bulbs being fans is a possibility.
II. No fan is a vase.
III. All switches are fans.
IV. No bulb is a vase.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. Only Conclusions I and II follow.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some bulbs being fans is a possibility → True (As some bulbs are switches and all fans are switches, so, some bulbs being fans is a possibility.)
II. No fan is a vase → True (As all fans are switches, and no switch is a vase, so, no fan is a base is also true.)
III. All switches are fans → False (It is possible, but no definite conclusion can be drawn.)
IV. No bulb is a vase → False (It is possible, but no definite conclusion can be drawn.)