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The system of linear equation : x+y...

The system of linear equation :
`x+y+z=6,x+2y+3z=10` and `x+2y+az=6` has no solutions when:

A

`a=2, b ne 3`

B

`a=3 , b ne 10`

C

`b=2, a=3 `

D

`b=3 , a ne 10`

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The correct Answer is:
C
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