Ten Problems

Solution

Solution

As Kakiri said, You can push the cork in and then take out the coin.

eunoia - true, it’s an uncommon word, but MS Word won’t point it out as an error if you type it in.

As Lindsay said, a picture is worth a thousand words - draw a picture!

Tony got this right — the first person who starts should say 6, so that no matter what the other person says, on the next turn he can say 17. And so on, with 28, 39 and 50.