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Consider the following for the next two ...

Consider the following for the next two itmes that follow :
For the system of linear equations `2x+3y+5z=9.7x+3y-2z=8 and 2x+3y+lamda z=mu`.
Under what condition does the above system of equations have infinitely many solutions ?

A

`lamda =5 and mu ne 9`

B

`lamda =5 and mu =9`

C

`lamda =9 and mu ne 5`

D

`lamda =9 and mu ne 5`

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