Mathematical trivia (i.e. collections of anecdotes and miscellaneous (recreational) mathematics) Can you suggest some books on mathematical trivia? I use the word "trivia" with a double meaning in this case: * curious anecdotes that enlighten what the real life of mathematicians is like (like the ones in _Mathematical Apocrypha Redux_ ); * curious miscellaneous (also mainly recreational) mathematical ideas and topics with only occasional anecdotes and jokes (like the ones in _Professor Stewart's Cabinet of Mathematical Curiosities_ and _Professor Stewart's Hoard of Mathematical Tresures_ ).

My suggestions:

1."The Penguin book of curious and interesting mathematics" by David G. Wells;

2."The Colossal Book of Mathematics" by Martin Gardner;

3."Maths Facts, Fun, Tricks and Trivia" by Paul Swan;

4."Math hysteria" by Ian Stewart;

5."In Mathematical Circles: A Selection of Mathematical Stories and Anecdotes: Quadrants I, II, III, and IV (Mathematical Association of America)" by Howard W. Eves.