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Statements: No pigeon is bird Only a few crow is pigeon All crow is parrot Conclusions: I. Some pigeon is not parrot II. All pigeon is parrot
Question

In the question below, some statements are given followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements, disregarding commonly known facts. Give answer-


Statements: No pigeon is bird
Only a few crow is pigeon
All crow is parrot
Conclusions:
I. Some pigeon is not parrot
II. All pigeon is parrot

A.

If only conclusion I follows

B.

If only conclusion II follows

C.

If either conclusion I or II follows

D.

If neither conclusion I nor II follows

E.

If both conclusions I and II follow

Correct option is C

As per the given statement, some part of Pigeon is Parrot. But, it can not be defined clearly in definite case that 'some part of Pigeon is not Parrot' or 'all part of Pigeon is Parrot'. 

Hence, both conclusions are individually not follow but satisfying the 'either-or' case because:

1. Elements are same in both conclusions

2. Both conclusion are individually not follow

3. 'All & Some-not' is the complementary pair of either-or.

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