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1 mark

If , then

  1. A
  2. B
  3. C
  4. D
    None of these

Solution & Step-by-step Explanation

Due to the linearity property of determinants, the sum of determinants that differ only in one column is the determinant of the matrix with that column replaced by the sum of corresponding columns.

Calculate the sums for to : Substitute into the determinant:

Take 5 out from column 1 and 5 out from column 2:

Calculating the determinant: None of the options match .

Practice this question

Try it yourself before checking the explanation above.

If , then
A
B
C
D
None of these

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