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The number of 3 3 non-singular matrices, with four entries as 1 and all other entries as 0 , is

Options

  1. A5
  2. B6
  3. Cat least 7
  4. Dless than 4

Correct answer

C. at least 7

Step-by-step solution

First row with exactly one zero; total number of cases =6 First row 2 zeros we get more cases Total we get more than 7 .

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