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    Question

    Find the distance between the points P (2, -1, 3) and Q

    (-5, 2, 1)?
    A 3тИЪ7 Correct Answer Incorrect Answer
    B 7тИЪ13 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D тИЪ62 Correct Answer Incorrect Answer

    Solution

    ATQ, we can say that d = тИЪ[(2 - (-5))2 + ((-1) - 2)2 + (3 - 1)2] = тИЪ(49 + 9 + 4) = тИЪ62 units

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