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The system of linear equations x+y+z = 6...

The system of linear equations `x+y+z = 6, x+2y+3z = 10 and x + 2y +az = b ` has no solution when _______

A

a= 3 , ` b != 10`

B

`b = 3 , a != 10`

C

a=2, `b != 3`

D

`b=2 , a=3`

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The correct Answer is:
A
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