If \( |A|=20 \), then the value of \( |3 A| \) is equal to (order o...

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If \( |A|=20 \), then the value of \( |3 A| \) is equal to (order of
\( \mathrm{P} \)
matrix is 3 ).
W
(1) 540
(2) 580
(3) 640
(4) 680
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