$A$ point is on the $x$-axis. What are its $y$-coordinate and $z$-coordinate?

Find the distance from the origin to the point $(6, 6, 7)$.

In the figure,if $P$ is $(2, 4, 5)$,find the coordinates of $F$.

The distance of the point $P(x, y, z)$ from the $yz$-plane is:

If the centroid of the tetrahedron $OABC$,where $O$ is the origin $(0, 0, 0)$ and $A, B, C$ are given by $(a, 2, 3)$,$(1, b, 2)$,and $(2, 1, c)$ respectively,is $(1, 2, -1)$,then the distance of point $P(a, b, c)$ from the origin is equal to:

Find the distance between the following pairs of points: $(2, 3, 5)$ and $(4, 3, 1)$. (in $\sqrt{5}$)