New ixamBee Expert Talk Session by ex-GM, NABARD
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Question

In each question below there are four statements followed by three conclusions1, 2 and 3. You have to take the four 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 does not follow from the four given statements, disregarding commonly known facts.

Statements-

Some pens are sharpeners

All sharpeners are erasers

No eraser is ink

Some inks are pencil

Conclusions.

I. Some pencil are not erasers.

II. All pens being eraser is a possibility

III.Some pencil are eraser

A Neither I nor III follows Correct Answer Incorrect Answer
B Either I or III does not follow Correct Answer Incorrect Answer
C Only III does not follow Correct Answer Incorrect Answer
D None follows Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

No eraser is ink(E) + Some inks are pencil(I) ⇒ Some pencil are not erasers(I). Hence conclusion I follows but conclusion III does not follow. Some pens are sharpeners(I) + All sharpeners are erasers (A) ⇒ Some pens are erasers(I) ⇒ Probable Conclusion ⇒ All pens being eraser is a possibility(A). Hence conclusion II follows. Alternate Method:

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