Decide, then read why
Lessons explain the rule. These drills make you choose. Naming a tile, judging a joker group, and passing three tiles are separate skills, so they stay in separate sets. A submitted answer is stored on this browser as one attempt. Clearing the record deletes it here.
Joker questions judge the group in front of you, not a complete winning hand. Charleston questions use the same idea as the Charleston lesson: keep the tiles the prompt names, and never pass the joker. When you want the rule again, go back to jokers or the tiles.