Select random by loose parts I have the following mesh. It are a series of hexagons on placed on a plane.

No I try to select random hexagons to give them an other material. I know there is a select random function but that only works on vertex, edges and faces. I try to do it by loose parts. 

Is there an option to do this?
To select hexagons randomly as in your case, you must use the random function with vertex, edges or faces. 

Then simply press " CTRL and  L " as mentioned Duarte.

Or press several times  " CTRL and  Numpad  + "  to add all part of the hexagons.