CIRCLE WITH A DOT

@futurebird @Bumblefish Yep, I read it… My bad. I used instinct, guts, not mathematics like the other answers. I should have

@futurebird @Bumblefish I'm no stats student, so maybe I haven't the bases (for lack of a better term, English is not my main language), but I think listA is the random one. The fact that in the listB there is nearly no triplets seems too good to be true.