CAT 2020 Slot 3 QA Q1 Progressions & Series

Question 1 of the Quantitative Ability (QA) section, CAT 2020 Slot 3, with CAT's official answer.

If x1 = -1 and xm = xm + 1 + (m + 1) for every positive integer m, then x100 equals
  1. A
    -5050
  2. B
    -5051
  3. C
    -5150
  4. D
    -5151

Answer: (A) -5050 Progressions & Series MCQ

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