The value of \( \lambda \) and \( \mu \) for which the system of li...

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The value of \( \lambda \) and \( \mu \) for which the system of linear
\( \mathrm{P} \)
equations
W
\[
\begin{array}{l}
x+y+z=2 \\
x+2 y+3 z=5 \\
x+3 y+\lambda z=\mu
\end{array}
\]
has infinitely many solutions are, respectively
(1) 6 and 8
(2) 5 and 7
(3) 5 and 8
(4) 4 and 9
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