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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-5

  • question_answer
    The position vectors of the points A, B, C are \[(2i+j\text{ }-k),\] \[(3i-2j\text{ }+k)\] and \[(i+4j-3k)\] respectively. These points

    A)  Form an is isoceles triangle

    B)  Form a right-angled triangle

    C)  Are collinear

    D)  Form a scalene triangle

    E)  None of these

    Correct Answer: C

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