How do Three men each with a sister need to cross a river At the river they find only a small boat in which only two of them can cross at a time How can all six get across?
1 person ferries everyone over, 1 at a time. So, # 1b+1s go over. # 1b goes back and gets 2b and they go over. # 1b goes back and gets 2s and they go over. # 1b goe…s back and gets 3b and they go over. # 1b goes back and gets 3s and they go over. # Nover everyone is on the other side. (MORE)