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Home  >>  CBSE XII  >>  Math  >>  Determinants
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If A is a matrix of order $3\times 3$,then | 3A |=_______________.

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Toolbox:
  • $k|A|=k^3|A|$
We know from the information in the tool box,$k|A|=k^3|A|$
If a matrix of order $3\times 3$,then $|3A|=3^3|A|=27|A|$
answered Mar 26, 2013 by sreemathi.v
 

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