What is the maximum number of rectangular components into which a vector can be split in space?

Which one of the following pairs cannot be the rectangular components of a force vector of $10 \, N$?

What is the maximum number of components into which a vector can be resolved?

$A$ man walks $20\,m$ at an angle $60^{\circ}$ north of east. How far towards the east has he travelled?

Given vector $\vec{A} = 2\hat{i} + 3\hat{j}$,the angle between $\vec{A}$ and the $y$-axis is:

$A$ plane covers $500 \,m$ in a direction $60^o$ with the runway while starting the flight. Find the distance covered by the plane in the horizontal and vertical directions.