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Statements: All fishes are grey in colour. Some fishes are heavy. Conclusions: All heavy fishes are grey in colour. All light fishes are not grey in colour.

Only conclusion I follows
Only conclusion II follows
Either I or II follows
Neither I nor II follows
Both I and II follow

Correct Answer: Only conclusion I follows

Explanation:

Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, it follows that 'Some heavy things are grey in colour'. I is a cumulative result of this conclusion and the first premise. Thus, only I holds.

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