AAI ATC Junior Executive 26 Dec 2015 Shift 2 Paper

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Question : 102 of 120

Marks: +1, -0

If 3x + 2y + z = 0, x + 4y + z = 0, 2x + y + 4z = 0 be a system of equations then

it can be reduced to a single equation and so a solution does not exist
it has only the trivial solution x = y = z = 0
it is consistent
determinant of the matrix of coefficient is zero

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