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NDA2023MathematicsDeterminantsActual

If all elements of a third order determinant are equal to 1 or –1, then the value of the determinant is:

Options

  1. A0 only
  2. Ban even number but not necessarily 0
  3. Can odd number
  4. D0, 1 or –1

Correct answer

B. an even number but not necessarily 0

Step-by-step solution

Since, all the elements of 3 × 3 matrix is –1 or 1 then determinent of the matrix is always an even number.

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