Question discussion

What is the determinant of the matrix with rows (2, 1, 3), (0, 4, 1) and (1, 2, 5)?

950Medium DSSSB TGT Computer Science 0 replies 1 views
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What is the determinant of the matrix with rows (2, 1, 3), (0, 4, 1) and (1, 2, 5)?

  • A21
  • B29
  • C31
  • D25
Correct answer: D

Explanation

Expanding along row 1: 2(20 − 2) − 1(0 − 1) + 3(0 − 4) = 36 + 1 − 12 = 25.

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