Quantos barris há no monte?

De  Jinkoki, c. 1818, Japão

E mais algumas fotos que podem servir para o mesmo problema:

Problema - Delícias turcas

Esta pirâmide é inteiramente construída a partir de delícias turcas. A base da pirâmide é feita por uma camada com a forma de um quadrado de 16 por 16 delícias turcas, num total de 256 delícias  turcas. Por cima desta camada há um segundo quadrado de 15 por 15, um terceiro quadrado de 14 por 14, e assim sucessivamente, até uma única delicia turca no topo da pirâmide. 

• Quantas delícias turcas estão nas três camadas superiores? 
• Quantas delícias turcas foram utilizadas, ao todo, na pirâmide?

Cubos

de: http://search.it.online.fr/covers/?p=1609

Robert Morris, ‘Box with the Sound of its Own Making’, 1961

Tony Smith, ‘Die’, 1962

Willys de Castro, ‘Objeto ativo’, 1962

Hans Haacke, ‘Condensation Cube’, 1963

Larry Bell, ‘Untitled’, 1964

Michelangelo Pistoletto, ‘Metro cubo d’Infinito’, 1965-1966

Alighiero e Boetti, ‘Zig-Zag’, 1966

Tony Rosenthal, ‘Alamo’, 1967

Isamu Noguchi, ‘Red Cube’, 1968

Sol Lewitt, ‘Incomplete Open Cube’, 1968

Eva Hesse, ‘Accession II’, 1968

John McCracken, ‘Untitled (Brown Block)’, 1970

Richard Serra, ‘Berlin Block (For Charlie Chaplin)’, 1978

Charles Ray, ‘Ink box’, 1986

Liz Larner, ‘Cube’, 1989

Rachel Lachowicz, ‘Sarah’, 1992

Janine Antoni, ‘Gnaw’ (detail), 1992

Cildo Meireles ‘Thread’, 1990-1995

Tara Donovan, ‘Untitled (Toothpicks)’, 1996

Jim Isermann, ‘Cubeweave (0396)’, 1996

Liam Gillick, ‘Discussion Island’, 1997

Ungaro

Tom Friedman, ‘Untitled (pedestal with flies)’, 2002

Jean Nouvel, ‘Monolith’, 2002

François Curlet, ‘American Dino: oeuf de voiture’, 2003

Damián Ortega, ‘Concrete cube (grey)’, 2003

Rebecca Warren, ‘Cube’, 2003

Jitrois

Jeppe Hein, ‘Shaking Cube’, 2004

Ai Weiwei, ‘Ton of Tea’, 2005

Gyan Panchal, ‘Eer’, 2006

Mona Hatoum, ‘Cube’, 2006

Johannes Wohnseifer, ‘Feminized White Cube’, 2006

Lara Favaretto, ‘Solo se sei mago’, 2006 (100kg de confetti blanc)

Monika Sosnowska, ‘Untitled’, 2006

Gerwald Rockenschaub, 2007

Jedediah Caesar, ‘Untitled (Hollow Box)’, 2007

Gregor Schneider, ‘Cube Hambourg’, 2007

Yann Serandour, ‘Inside the white cube’, 2008

Roni Horn, ‘Pink Tons’, 2008

Carlos Estrada Vega, ‘Carlitos’, 2008

Fabien Giraud et Raphaël Siboni, 2009

Kris Martin, ‘Thank You’, 2009

Walead Beshty, ‘20-inch Copper (FedEx® Large Kraft Box© 2005 FEDEX 330508) International Priority, Los Angeles–London trk#8685 8772 8040, date October 2–6, 2009. International Priority London–New York trk#863822956489, date November 18–20, 2009, International Priority New York–London trk#7952 0098 1790, date September 19–21, 2011′, 2011

Benjamin Renoux, ‘Cube 1′, 2011

Stefan Bruggemann, ‘Nothing Box’, 2003



Martin Creed, ‘Work No. 571′, 2006



Marissa Lee Benedict, ‘Re-action-Reaction, Accession (after Eva Hesse)’, 2011



Willys de Castro, ‘Projetos Para Pintura’, 1958



Ellsworth Kelly, ‘Green Black’, 1968



Johannes Wohnseifer, ‘S.O.A.P’, 2007



Collectif anonyme, ‘Cube’, 2010



Marcel Duchamp, ‘Why not sneeze rrose sélavy?’, 1921



Sol LeWitt, ‘The Buried Cube’, 1968



Jackie Winsor, ‘Burnt Piece’, 1977-8



Angel Ruiz-Larrea, ‘Monumento a la constitución’, 1978



Gabriel Orozco, ‘Elevator’, 1994, found object



Didier Vermeiren, ‘Adam’, 1995



Monica Bonvicini, ‘Don’t Miss a Sec.’, 2004



Carsten Nicolai, ‘Reflex’, 2004



Werner Reiterer, ‘Life counts death’, 2008



Tom Friedman, ‘Care Package (Manipulated)’, 2008



Caleb Larsen, ‘A Tool to Deceive and Slaughter’



Krystina Naylor, ‘Untitled (Open Box II)’, 2011



Meca



Santiago Sierra, ‘Bread Cube’, 2003



Santiago Sierra, ‘586 horas de trabajo’, 2004



Santiago Sierra, ‘Jerusalem Stones in a Meter Cube Box’, 2004