Directions: In this question, three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusion(s) logically follows/follow from the statements.
Statements:
No copper is silver.
All gold is copper.
All aluminium is gold.
Conclusions:
I. No aluminium is silver.
II. Some gold is silvers
III. All aluminium is copper.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Both conclusions I and III follow.
Conclusions:
I. No aluminium is silver. - Follows (because All aluminium is gold, All gold is copper and No copper is silver. So, No aluminium is silver too)
II. Some gold is silvers - Does not follow (because All gold is copper and No copper is silver. So, Some gold cannot be silvers)
III. All aluminium is copper. - Follows (because All aluminium is gold, All gold is copper. So, All aluminium is copper too)