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Question

In each question below are given three statements 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 conclusion logically follows from the given statements, disregarding commonly known facts. Give answer :

Statements: Some printers are carbons.

No carbon is a graphite.

No diamond is printer.

Conclusions:I. All printers are diamond.

II. Some diamonds are carbons.

A if only conclusion I follows. Correct Answer Incorrect Answer
B if only conclusion II follows. Correct Answer Incorrect Answer
C if either conclusion I or II follows. Correct Answer Incorrect Answer
D if neither conclusion I nor II follows. Correct Answer Incorrect Answer
E if both conclusions I and II follow. Correct Answer Incorrect Answer

Solution

No diamond is printer(E) ⇒ conversion ⇒ No printer is a diamond (E). Hence conclusion I does not follow. No diamond is printer (E) + Some printers are carbons (I) ⇒ Some carbons are not diamond (O*). Hence conclusion II does not follow. Alternate method:

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