MCQ
The number of positive integral solutions $\left| {\,\,\begin{array}{*{20}{c}}{1 - \lambda }&2&1\\{ - 3}&\lambda &{ - 2}\\2&{ - 2}&{1 + \lambda }\end{array}\,\,} \right|$ $= 0$ is
- A$0$
- B$2$
- ✓$3$
- D$1$
✓
Answer
Correct option: C.
$3$
c
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