Dumping is a shitshow of a joke. 68 input is probably suboptimal. 81 is incompletable, and allows progression. 102 is incompletable, and won't allow progression.
I completed the original non-assisted many years ago. If this is the same as The Impossible Quiz (without Deluxe in title), then: - 81: rub the pole up and down - 102: dots level, not every screen has a dot. you just need to wait if it's a cube/rectangle