By Jenkins, Adrian
By Bee, WILLIAM
By Vorderman, Carol
By Rob Eastaway, John Haigh
By Allenby, R. B. J. T.
By Dudeney, H.E.
By Weinstein, Lawrence, Adam, John A.
By Sautoy, Marcus du, Marcus Du Sautoy
By The Times Mind Games
By Rob Eastaway
By Shasha, Dennis E.
By Adler, Irit
By Hilger, Matthew
By Mojang AB
By Gardner, Martin
By Claire Publications
By Mazur, Joseph
By The UK Mathematics Trust
By Pappas, Theoni
By Marcus Du Sautoy, du Sautoy, Marcus
By Danesi, Marcel
By Collins KS2
By The Times Mind Games, .
By Casti, John
By Rooney, Anne
By Deslandes, Clement, Guillaume
By Marcus Du Sautoy
By Maker, Brainstorm