What do these hands mean?

This is the system of base-6 numbers: the right hand is the unit digit and the left hand is the unit of 6.

Therefore, from the first one (4 on the left and 1 on the right), ( $4\times 6$ ) + ( $1\times 1$ ) = 25.

Then, from the second one (2 on the left and 3 on the right), ( $2\times 6$ ) + ( $3\times 1$ ) = 15.

Hence, for the last one (5 on the left and 0 on the right), ( $5\times 6$ ) + ( $0\times 1$ ) = $\boxed{30}$ .

In other words, $(41)_{6}$ = 25 ; $(23)_{6}$ = 15 ; $(50)_{6}$ = 30.