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     EduGorilla 
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    The system of equations – 2x + y + z = a, x – 2y + z = b, x + y – 2z = c has no solution, if

    Options :-

    1. a + b + c  0
    2. a + b + c = 0
    3. a = 1, b = 1, c = - 2
    4. none of these
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