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      Question

      Statements: All stairs are marbles. All marbles

      are tiles. Some tiles are irons. Conclusions: I. Some tiles are stairs. II. Some marbles cannot be stairs. In each of the questions below are given two/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 given conclusions logically follows from the given statements disregarding commonly known facts.
      A if both conclusions I and II follow Correct Answer Incorrect Answer
      B if neither conclusion I nor II follows Correct Answer Incorrect Answer
      C if either conclusion I or II follows. Correct Answer Incorrect Answer
      D if only conclusion II follows. Correct Answer Incorrect Answer
      E if only conclusion I follows. Correct Answer Incorrect Answer

      Solution

      All stairs are marbles(A) + All marbles are tiles (A) ⇒All stairs are tiles(A) ⇒Conversion ⇒Some tiles are stairs. Hence, conclusion I follows. All stairs are marbles(A) ⇒Conversion ⇒Some marbles are stairs(I). Hence, conclusion II does not follow.

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