If the lines x - 2 1 = y - 3 1 = z - 4 -k and x - 1 k = y - 4 2 = z - 5 1 are coplanar, then k can have

JEE Main 2013 Mathematics question

If the lines and are coplanar, then k can have

Answer: (1)

Coplanar iff $ = -(1 + 2k) -

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Question ID VK-103892