The number of positive integral solutions | , , * 20 c 1 - &2&1 -… - Vidyadip

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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