Mathematics · Vectors

Let the line L1 be parallel to the vector -3î + 2ĵ + 4k̂ and pass through the point (2, 6, 7) and the line L2 be parallel to the vector 2î + ĵ + 3k̂ and pass through the point (4, 3, 5). If the line L3 is parallel to the vector -3î + 5ĵ + 16k̂ and intersects the lines L1 and L2 at the points C and D, respectively, then |CD→|2 is equal to:

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