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KVPY Sample Paper KVPY Stream-SX Model Paper-19

  • question_answer
    The three planes \[4y+6z=5,\] \[2x+3y+5z=5\] and \[6x+5y+9z=10\]

    A) Meet in a point

    B) Have a line in common

    C) Form a triangular prism

    D) None of these

    Correct Answer: B

    Solution :

    Solution of these three equations is infinite.
    \[-\,(4y+6z-5)+3\,\,(2x+3y+6z-5)\]
    \[=6x+5y+9z-10\]
    So planes contain straight line.


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