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What is the value of 1-2+3-4+5- +101 ?

Options

  1. A51
  2. B55
  3. C110
  4. D111

Correct answer

A. 51

Step-by-step solution

aligned & S=(1-2)+(3-4)+ +101 & -1-1-1 +101 & -50+101 & S=51 aligned

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