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NDA 2013
Exam
NDA
Year
2013
Subject
Mathematics
Chapter
Determinants

NDA 2013 · Mathematics · Determinants

What is the value of the minor of the element 9 in the determinant...

What is the value of the minor of the element 9 in the determinant \left|1019201319242\begin{array}{ccc}10 & 19 & 2 \\ 0 & 13 & 1 \\ 9 & 24 & 2\end{array}\right| ?

Options

  1. A−9-9
  2. B−7-7
  3. C77
  4. D00

Correct answer

B. −7-7

Step-by-step solution

Minor of element 9=\left|192131\begin{array}{ll}19 & 2 \\ 13 & 1\end{array}\right|=-7
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