Question
Statements: Some ractangle are envelope.
> All envelope are square. Some square are bangle. No bangle is circle. Conclusion: I. Some ractangle are bangle. II. All envelope are bangle. III. No square is a carrot. IV. Some square are circle. In each question below are given some statements followed by four conclusions numbered I, II, III and IV are given. You have to take the three given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the four given statements, disregarding commonly known facts.Solution
Some ractangle are envelope(I) + All envelope are square(A) ⇒ Some ractangle are square(I) + Some square are bangle(I) ⇒ No conclusion. Hence conclusion I and III do not follow. All envelope are square(A) + Some square are bangle(I) ⇒ No conclusion. Hence conclusion II does not follow. Some square are bangle(I) + No bangle is circle(E) ⇒ Some square are not circle(O). Hence conclusion III does not follow.
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