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NDA 2010
Exam
NDA
Year
2010
Subject
Mathematics
Chapter
Matrices

NDA 2010 · Mathematics · Matrices

If A be a real skew-symmetric matrix of order n such that A^2+I=O ,...

If A be a real skew-symmetric matrix of order nn such that A2+I=OA^2+I=O, II being the identity matrix of the same order as that of A , then what is the order of A ?

Options

  1. A3
  2. BOdd
  3. CPrime number
  4. DEven

Correct answer

A. 3

Step-by-step solution

The correct answer is option (A).
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