List of top Mathematics Questions on Section Formula asked in BITSAT

The ratio in which the join of (2, 1, 5) and (3, 4, 3) is divided by the plane x + y − z = 12 is:
An ellipse has $OB$ as semi-minor axis, $F$ and $F$ are its foci and the $\angle FBF$, is a right angle. Then, the eccentricity of the ellipse is