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Discussion :: Mathematical and Computer Operations

  1. In the following questions, the symbols +, ×, =, ÷ and - are used with following meanings:
    'P+Q' means 'P is greater than Q'.
    'P×Q' means 'P is either greater than or equal to Q'.
    'P=Q' means 'P is equal to Q'.
    'P÷Q' means 'P is smaller than Q'.
    'P-Q' means 'P is either smaller than or equal to Q'.

    Statements: M Ã· N, P Ã— Q, P + N
    Conclusions: I. N + Q   II. N - Q
    2. A.
    if only conclusion I is true.
    B.
    if only conclusion II is true.
    C.
    if either conclusion I or II is true.
    D.
    if neither conclusion I nor II is true.
    E.
    if both the conclusions I and II are true.

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    Answer : Option C

    Explanation :

    M < N -- (i); P ≥ Q -- (ii); P > N -- (iii)

    From (ii) and (iii), we get N < P â‰¥ Q => NO relationship between N and Q can be established. But I and II together are exhaustive. Hence either I or II is true.

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