[Wraaaaaah Professor this is hard without his pen and paper! Without realizing it, Luke half-mimes putting marbles into and out of a box. Two of the same color, two of another color...
Black pairs and white pairs both mean black marbles go in...A black and white pair means a white one...
Aha!]
I think I've got it, Professor. It's a white marble left in the box!
no subject
Black pairs and white pairs both mean black marbles go in...A black and white pair means a white one...
Aha!]
I think I've got it, Professor. It's a white marble left in the box!
[Yep he's pointing.]