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2020 AMC 10A Problem 8

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2020 AMC 10A Problem 8AMC 10 Step by Step
Name:                             Date: October 28, 2026
Sequences & Series · difficulty 2 of 5 · about 3 min · position P1-10

What is the value of

1+2+3−4+5+6+7−8+⋯+197+198+199−200?1+2+3-4+5+6+7-8+\cdots+197+198+199-200?

  1. A)9,8009,800
  2. B)9,9009,900
  3. C)10,00010,000
  4. D)10,10010,100
  5. E)10,20010,200

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