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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If a, b R distinct numbers satisfying |a-1| + |b-1| = |a| + |b| = |a+1| + |b+1| , then the minimum value of |a-b| is :

Options

  1. A3
  2. B0
  3. C1
  4. D2.

Correct answer

D. 2.

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