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AP EAMCET2011MathematicsDeterminants

| array lll 24 & 25 & 26 25 & 26 & 27 26 & 27 & 27 array | is equal to

Options

  1. A0
  2. B-1
  3. C1
  4. D2

Correct answer

C. 1

Step-by-step solution

Let = | array lll 24 & 25 & 26 25 & 26 & 27 26 & 27 & 27 array | Applying R₂ R₂-R₁ and R₃ R₃-R₂ aligned & = | array ccc 24 & 25 & 26 1 & 1 & 1 1 & 1 & 0 array | & =1[25-26]-1[24-26] & =-1+2=1 aligned

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