Under which one of the following condition does the system of equations \left[\begin{array}{ccc}1 & 2 & 4 \ 2 & 1 & 2 \ 1 & 2 & a−4 \ ]\end{array}\left[\begin{array}{c}x \ y \ z \ ]\end{array} = \left[\begin{array}{c}6 \ 4 \ a \ ]\end{array} have a unique solution?

AAI ATC Junior Executive 2016 Shift 1 Paper

Question : 93 of 120

Marks: +1, -0

Under which one of the following condition does the system of equations

{[\table 1 , 2 , 4 ; 2 , 1 , 2 ; 1 , 2 , a−4 ; ]}{[\table x ; y ; z ; ]} = {[\table 6 ; 4 ; a ; ]}

have a unique solution?

Go to Question:

Prev Question

Next Question