The number of real values of for which the lines and are coplanar

MATHEMATICS · Subjective · CBSE · Mathematics · Three-Dimensional Geometry · Three-Dimensional Geometry

Problem

The number of real values of

k

for which the lines

\frac{x}{1} = \frac{y-1}{k} = \frac{z}{-1}

and

\frac{x-k}{2k} = \frac{y-k}{3k-1} = \frac{z-2}{k}

are coplanar, is