Q4 of 75 Page 8

Mark the correct alternative in the following:

The number of solutions of the system of equations:


2x + y – z = 7


x – 3y + 2z = 1, is


x + 4y – 3z = 5


The given system of equations is :-


2x + y – z = 7


x – 3y + 2z = 1


x + 4y – 3z = 5


The matrix equation corresponding to the above system is



Let A = and B =


|A| = = 2(9-8) -1(-3-2) -1(4+3) = 2+5-7 = 0


and adjA =


(adjA)B = = 0


So, No solution exists.

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Mark the correct alternative in the following:

The number of solutions of the system of equations: x – 3y + 2z = 1, is


x + 4y – 3z = 5


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Mark the correct alternative in the following:

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x + y + z = 2


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Mark the correct alternative in the following:

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