જો A = [ cc 5 x & 10 8 & 7 ] અન | A |=25 તો x =.......... - Vidyadip

MCQ

જો $A =\left[\begin{array}{cc}5 x & 10 \\ 8 & 7\end{array}\right]$ અન $| A |=25$ તો $x =..........$

A
$-3$
B
$3$ અને$-3$
✓
$3$
D
$3$ અથવા$-3$

✓

Answer

Correct option: C.

$3$

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