The discussion revolves around a riddle contest where participants post logic problems and riddles, taking turns to answer and create new ones. The initial riddle involves a murder disguised as a suicide, which participants quickly solve by noting that the tape recorder could not have been rewound if the victim had indeed committed suicide. Various other riddles follow, including brain teasers about a man using stairs instead of an elevator, twins with confusing birth certificates, and a sequence puzzle. Participants engage in lively exchanges, sharing answers and explanations while also debating the format of the thread, with some suggesting that individual riddles should have separate threads for better organization. The conversation highlights the enjoyment of logic puzzles and the social interaction they foster, despite some concerns about the structure of the thread.
You have to grab half of the pennies (5) and flip them all over. If you picked up all tails and made that one group, there will be 5 heads after flipping them, and 5 heads in the other group (the rest of the pennies). If you pick up 4 tails and 1 head, that will be 4 heads and 1 tail, and the rest will be 4 heads and one tail; if you pick up 3 tails and 2 heads, there will be 2 tails and 3 heads, and the rest will have that, and so on all the way to if you pick up all the heads, flipped them to tails, and the rest will be tails. That way there will always be the same number of heads in each group.
