Read the given statements 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, a device which of the given conclusions logically follow(s) from the statements.
Statements:
1. No plastic is iron.
2. All steel is iron.
Conclusions:
I. Some plastic is steel.
II. Some iron is steel.
III. No steel is plastic.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e Only conclusions II and III follow.
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The least possible Venn Diagram for the given statements is drawn below:
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Conclusions: I. Some plastic is steel → False (All steel are part of Iron and No plastic is iron, so No steel will be plastic also). II. Some iron is steel → True (As All steel are part of iron, so some iron is steel is true). III. No steel is plastic → True (All steel are part of Iron and No plastic is iron, so No steel will be plastic also). Hence, Only conclusions II and III follow. |
