The riddle
I roll around your floor all by myself, bump gently into chairs, gobble up crumbs and dust, and drive back to my dock when I'm tired. What am I?
Show hint
I do the same job as a broom, only I'm round and I beep.
Show answer
A robot vacuumA robot vacuum drives around on its own, bumps into furniture to find its way, sucks up dust and crumbs, and returns to its charging dock when the battery runs low.
