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AP EAMCET2002MathematicsMatrices

If A= [ array lll 1 & 0 & 1 2 & 1 & 0 3 & 2 & 1 array ] , then det A is equal to

Options

  1. A2
  2. B5
  3. C3
  4. D4

Correct answer

A. 2

Step-by-step solution

We have, aligned |A| & = | array lll 1 & 0 & 1 2 & 1 & 0 3 & 2 & 1 array |=1(1-0)+0+1(4-3) & =1+1=2 aligned

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