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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Determinants

NDA 2014 · Mathematics · Determinants

If A and B are square matrices of second order such that |A|=-1,|...

If A and B are square matrices of second order such that ∣A∣=−1,∣B∣=3|\mathrm{A}|=-1,|\mathrm{ B}|=3, then what is ∣3AB∣|3 \mathrm{AB}| equal to?

Options

  1. A3
  2. B-9
  3. C-27
  4. DNone of these

Correct answer

C. -27

Step-by-step solution

The correct answer is option(C)
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