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Three statements are given followed by three conclusions numbered I, II and III. Consider the statements assuming them to be true even if they seem to be at variance from commonly known facts, and state which of the conclusions logically follow from the given statements?

statement:

Some envelopes are papers.

All paper are pulp.

All pulp are leaves.

The conclusion

(I) Some leaves are papers.

(II) Some pulp is paper.

(III) All papers are leaves.

This question was previously asked in
RRB Group D 30 Aug 2022 Shift 3 Official Paper
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  1. All conclusions I, II and III follow.
  2. Only conclusion II follows.
  3. Conclusion only I and III follow.
  4. Conclusion only I follow.

Answer (Detailed Solution Below)

Option 1 : All conclusions I, II and III follow.
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Detailed Solution

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Statement:

Some envelopes are papers.
All paper are pulp.
All pulp are leaves.

Venn diagram:

Conclusion:

(I) Some leaves are papers → Follow → Since 'all papers are pulp' and 'all pulp are leaves' then it can be said that some leaves are papers and the same can be seen in the Venn diagram thus the conclusion follows.

(II) Some pulp is paper → Follow → We have 'all paper are pulp' which means there is some part of pulp that is connected to papers and therefore the conclusion follows.

(III) All papers are leaves → Follow → From the statements, 'all papers are pulp' and 'all pulp are leaves', it is safe to say that all papers are leaves as they are connected with a direct link i.e., pulp thus the conclusion follows.

So all conclusions I, II and III follow.

Hence the correct answer is option 1)
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