In order that the matrix \( \left[\begin{array}{lll}1 & 2 & 3 \\ 4 & 5 & 6 \\ 3 & \lambda & 5\en...

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In order that the matrix \( \left[\begin{array}{lll}1 & 2 & 3 \\ 4 & 5 & 6 \\ 3 & \lambda & 5\end{array}\right] \) be non-singular,
P
W \( \lambda \) should not be equal to
(1) 1
(2) 2
(3) 3
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