1.

If \[\left( \mathbf{x},\mathbf{y} \right)=\left( \mathbf{8},\mathbf{2} \right)\] is the solution of the pair of linear equations \[\mathbf{mx}+\mathbf{y}=\mathbf{2x}+\mathbf{m}=\mathbf{10},\]then \[\mathbf{m}+\mathbf{n}\] is equal to

A.  -2     
B.  -1
C.  2                                
D.  1
Answer» B.  -1


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