If | 1pt * 20 c 1&2&3 2&x&3 3&4&5 , | = 0, then x = - Vidyadip

MCQ

If $\left| {{\kern 1pt} \begin{array}{*{20}{c}}1&2&3\\2&x&3\\3&4&5\end{array}\,} \right| = 0,$ then $x =$

A
$-5/2$
B
$-2/5$
✓
$5/2$
D
$2/5$

✓

Answer

Correct option: C.

$5/2$

c
(c) Since $x = \frac{5}{2}$ satisfies the given determinant.

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