Question

Four people are sitting around a campfire after a long day of recreation when one man comments: "Do you realize that around this campfire the four of us include a mother father brother sister son daughter niece nephew aunt uncle and a couple cousins"?. If everyone is related by blood (with no unusual marriages) how is this possible?"

Answer

The campfire circle includes a woman and her brother. The woman"s daughter and the man"s son are also present."