But that doesn’t surprise you, right?
I am skeptical about number one. I Think any answer would entail lighting two ends or one and one end of the other or somehow crossing the ropes, but these solutions would all entail, I Think that the ropes burned at an even rate across all stretches of´the ropes.
2 one answer is to melt the bottle. You could push the Cork into the bottle. You could burn the Cork and push the Ashes in.
3 - you probably don’t need the scale at all. one of those
4- take different numbers of coins from each bag and remember the numbers. The total should give away which bag by the extra weight amount.
But now I am bored. Not because they are easy and hell probably some of my answer are not ‘right’, but I find this kind of thing boring. Except lateral thinking type questions, those I like. Which is why I treated number two like it was one.