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Logical Deduction · Discussion forum

Logical Deduction - Section 1 Question 4 – answer, explanation & discussion

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Question 4 Back to Exercise

Statements: All flowers are trees. No fruit is tree.

Conclusions:

I.  No fruit is flower.

II. Some trees are flowers.

  • A Only conclusion I follows
  • B Only conclusion II follows
  • C Either I or II follows
  • D Neither I nor II follows
  • E Both I and II follow Correct
Correct Answer: Option E

As discussed above, the conclusion must be universal negative and should not contain the middle term. So, it follows that 'No flower is fruit'. I is the converse of this conclusion and thus it follows. II is the converse of the first premise and so it also holds.

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