imo class 12 vector algebra

Which pair is collinear?

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#IMO#Class 12#Mathematics#Vector Algebra#logical-reasoning

Which pair is collinear?

  • A. (i + j, i − j)
  • B. (2i + 2j, i + j)
  • C. (i, j)
  • D. (i + k, j + k)

Answer: B) (2i + 2j, i + j)

Explanation: One vector is a scalar multiple of the other.

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