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Black Book Advanced Problems in MathematicsMathematicsDeterminants

If the system of equations ax + y + 2z = 0x + 2y + z = b 2x + y + az = 0 has no solution then (a + b) can be equal to

Options

  1. A-1
  2. B2
  3. C3
  4. D4

Correct answer

A. -1

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