A Tangle A problem from the October 1960 issue of Eureka, the journal of the Cambridge University Mathematical Society: Which of the following knots are knotted and which not? Image: Eureka SelectClick for Answer (a) Not knot, (b) Knot, (c) Knot, (d) Not knot. November 11, 2023November 10, 2023 | Puzzles
