Question

    Statements: No slim is weak All weak is

    lean Some lean is fat Mostly lean is big Conclusions: I. No big is slim II. Some weak is fat III. Some big which is lean is also weak is a possibility In the question, assuming the given statements to be true, find out which of the following conclusion(s) among the given four conclusions is/are definitely true and then give your answer accordingly.
    A Only conclusion II follows. Correct Answer Incorrect Answer
    B Either conclusion I or II follows Correct Answer Incorrect Answer
    C Only conclusion III follows. Correct Answer Incorrect Answer
    D Both conclusion II and conclusion III follow. Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    No slim is weak (E) + All weak is lean (A) → Some lean is not slim (O). Mostly lean is big (I) + Some lean is not slim (O) → No conclusion. Hence conclusion I does not follow. All weak is lean (A) + Some lean is fat (I) → No conclusion. Hence conclusion II does not follow. All weak is lean (A) + Mostly lean is big (I) → Probable conclusion   → Some big may be weak (I). Hence conclusion III follows.

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