The two statements of the question followed by two conclusions I and II. Read the conclusion and decide most suitable answer.
Statement:
No red is black.
Some black are yellow.
Conclusions:
I. No yellow is red.
II. All red being yellow is a possibility.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → If only conclusion II follows
A conclusion follows only if it is true in every diagram that fits both statements. A ‘possibility’ conclusion follows if there is at least one such diagram in which it is true.
“No red is black” keeps the Red and Black circles apart; “Some black are yellow” makes Black and Yellow overlap. Nothing links Red with Yellow, so Red may lie inside Yellow, as below.
Conclusion I (No yellow is red) does not follow: in the diagram above every red is yellow, so “no yellow is red” is not certain.
Conclusion II (All red being yellow is a possibility) follows: the diagram above fits both statements and has all red inside yellow, so it is possible.