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If | A |=8 , where A is a square matrix of order 3 , then what is | adj A| equal to ?

Options

  1. A16
  2. B24
  3. C64
  4. D512

Correct answer

C. 64

Step-by-step solution

aligned & Since | A |=8 0 & | adj ~A |=| A |^ n-1 aligned where n is order of the matrix | adj A |=|8|³⁻¹=|8|^2=64 .

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