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 of cousins"?.
If everyone is related by blood (with no unusual marriages) how is this possible?

The campfire circle consists of precisly 4 persons: including a Man (M) and a woman (W) who is his sister. Remaining individuals are:

Edited on March 4, 2022, 11:30 pm

Posted by K Sengupta on 2022-03-04 23:19:32