High School Challenge

Week Ending 1-17-99

Send Answer to: ucfcasio@pegasus.cc.ucf.edu

Congratulations to Felisha Riggs of Central Middle School in Murfreesboro, TN. Felisha wins the Casio CFX-9850G Color Graphing calculator.

Sum Factorial

A sum factorial is defined as a number that equals the sum of the factorials of its digits. 1 = 1!. 2 = 2!. 145 = 1!+4!+5!. There is another one between 40,550 and 40,600. What is it and how did you find it?

Correct Solutions:

  1. Sorin Ionescu. John Abbott College, Montreal, Canada
  2. Brendon Hansen. Newport Harbor HS, Newport Beach, CA
  3. Justin Altman. Center for the Arts and Sciences, Saginaw, MI
  4. Jeffrey Mo. University ES, Calgary, Alberta, Canada
  5. Sebastiaan Janssens. Marnix HS, Ede, The Netherlands
  6. Ulrik Buchholtz. Dronninggaardskolen, Holte, Denmark
  7. Denis Chebikin. Riga SS No. 40, Riga, Latvia
  8. Yuri Mihelovich. Riga SS No. 13, Riga, Latvia
  9. Alexandra Korolyova. Riga SS No. 40, Riga, Latvia
  10. Thomas Allen. Jane Lathrop Stanford HS, Palo Alto, CA
  11. Khem Veasna. Revere HS, Revere, MA
  12. Julie Edwards. Newark Academy, Livingston, NJ
  13. Amy Finck. Msgr. Donovan HS, Toms River, NJ
  14. Michael Walker. Lincoln Park HS, Chicago, IL
  15. Wilson Shieh. McNally Composite HS, Edmonton, Alberta, Canada
  16. Paul Saldarriaga. Lake Highland HS, Orlando, FL
  17. Bart Robinson. Eagle HS, Eagle, ID
  18. Gershon Bialer. Evanston Township HS, Evanston, IL
  19. Lisa Schechner. Manorhaven School, Port Washington, NY
  20. Michael Richardson. Lewisville HS, Lewisville, TX
  21. Nick Brown. Brookhaven HS, Brookhaven, MS
  22. Allen Rabinovich. Brooklyn Technical HS, Brooklyn, NY
  23. Vivian Tang. Chaparral HS, Temecula, CA
  24. Clark Bedsole. Trinity Presbyterian School, Montgomery, AL
  25. Pradeep Baliga. Central HS, Tuscaloosa, AL
  26. Ying Li. Brooklyn Technical HS, New York, NY
  27. Chris Young. Center For Arts & Sciences, Saginaw, MI
  28. Vivek Jain. Graham HS, Bluefield, VA
  29. Daniel Grysen. Campbell JHS, Houston, TX
  30. Michael Moyer. The Way Home School, Carlisle, PA
  31. Yiming Yao. Hazen HS, Renton, WA
  32. Ben Campbell. Nepean HS, Ottawa, Ontario, Canada
  33. Chi Yuen Kenneth Tsui. Bossley Park HS, Sydney, NSW, Australia
  34. Mike Giordano. Msgr. Donovan HS, Toms River, NJ
  35. Mike Himes. Msgr. Donovan HS, Toms River, NJ
  36. Leslie CY Chan. Langstaff SS, Thornhill, Ontario, Canada
  37. Anand Jain. Graham HS, Bluefield, VA
  38. Eric Hoke. Wayland HS, Wayland, MA
  39. Andy Eadon. Grissom HS, Huntsville, AL
  40. Andrew Hintz. Kingwood HS, Kingwood, TX
  41. Erin Perkins. Lake Highland Prep, Orlando, FL
  42. Scott Vogelpohl. Northwest Rankin HS, Brandon, MS
  43. Shawna Snow. Oviedo HS, Oviedo, FL
  44. Morgan Chen. Mt. Carmel HS, San Diego, CA
  45. Darwin Lo. Montera MS, Oakland, CA
  46. Natalie Ruschak. Oviedo HS, Oviedo, FL
  47. Fawntia Fowler. Sheridan HS, Sheridan, OR
  48. Joe Johnson. Merritt Island HS, Merritt Island, FL
  49. Kolade Apata. Benjamin E. Mays HS, Atlanta, GA
  50. R. Rajesh. E. R. H. SS, Srirangam, Tiruchirapalli, Tamil Nadu, India
  51. Laurel Maharaj. Rio Claro HS, Trinidad, West Indies
  52. Nasser Demir. American School of Kuwait, Hawalli, Kuwait
  53. Nicelina Chaplauske. Carteret HS, Carteret, NJ
  54. Britney Hall. Merritt Island HS, Merritt Island, FL
  55. Unmita Patel. Merritt Island HS, Merritt Island, FL
  56. Dayna Durbin. Merritt Island HS, Merritt Island, FL
  57. Andy Powers. Merritt Island HS, Merritt Island, FL
  58. Matt Hardy. Merritt Island HS, Merritt Island, FL
  59. Roxanna London. Merritt Island HS, Merritt Island, FL
  60. Nikki Awtonomow. Merritt Island HS, Merritt Island, FL
  61. Neil Mehta. Merritt Island HS, Merritt Island, FL
  62. Jason Covey. Liberty HS, Renton, WA
  63. Nate Eldredge. Petaluma HS, Petaluma, CA
  64. Eddie Palma. Marysville HS, Marysville, CA
  65. Xingji Zheng. Abby Senior SS, Abbotsford, BC, Canada
  66. Ashirul Amin. RC Nordic United World College, Flekke-Fjaler, Norway
  67. Daniel Yu. Randolph MS, Randolph, NJ
  68. Josh Looks. Homestudy, Jerusalem, Israel
  69. Daniel Labbe. Polyvalente Le boise, Victoriaville, Quebec, Canada
  70. Natko Bajic. Pojisan PS, Split, Croatia
  71. Michael Gough. Walkersville HS, Walkersville, MD
  72. Bryan Gough. Walkersville HS, Walkersville, MD
  73. Sadia Rahman. Herbert H. Lehman HS, Bronx, NY
  74. William Chau. East Brunswick HS, East Brunswick, NJ
  75. Duc Thai. Rostrevor College, Adelaide, SA, Australia
  76. Matt Griffin. Pitt Meadows SS, Pitt Meadows, BC, Canada
  77. Chia Chih Chun. TEDA International School, TEDA, Tianjin, China
  78. Robert Cooper. Gonzaga HS, Washington, DC
  79. Alvin Chen. Bullard HS, Fresno, CA
  80. Ryan Goldenberg. Berkeley Prep, Tampa, FL
  81. Bogdan Moldovan. George S. Henry Academy, Toronto, Ontario, Canada
  82. Viktor Blasjo. Brankyrka Gymnasium, Stockholm, Sweden
  83. Maxim Bushmakin. Lake Park HS, Roselle, IL
  84. Kimberly Hardy. Lake Highland Prep, Orlando, FL
  85. Kim Kendall. Merritt Island HS, Merritt Island, FL
  86. Dorothy Sparks. Oviedo HS, Oviedo, FL
  87. Mary Sparks. Oviedo HS, Oviedo, FL
  88. Victoria Hernandez. Lake Highland Prep, Orlando, FL
  89. Philip Ng. Brooklyn Technical HS, New York, NY
  90. Mili Mittal. Lake Highland Prep, Orlando, FL
  91. Hector Yuen. Escuela Nacional Preparatoria Plantel, Mexico
  92. Michael Khasin. Brooklyn Technical HS, Brooklyn, NY
  93. Eshwar Udho. Lehman HS, Bronx, NY
  94. Jack Tao. Kimpton MS, Stow, OH
  95. Jason Wong. NCIVS, Sarnia, Ontario, Canada
  96. Koos van Zyl. Overkruin HS, Pretoria, South Africa
  97. Lisa Hochrein. Quincy HS, Quincy, CA
  98. Vishaal Gupta. Lake Highland Prep, Orlando, FL
  99. Fiona Gispen. Oxford MS, Oxford, MS
  100. Alicia Grattan. Santa Ynez Valley HS, Solvang, CA
  101. Vivek Sahani. John P. Stevens HS, Edison, NJ
  102. Sindy Lam. Windermere SS, Vancouver, BC, Canada
  103. Frank Kuo. Los Altos HS, La Puente, CA
  104. James Linkous. Jefferson JHS, Merritt Island, FL
  105. Mike Mandler. Jefferson JHS, Merritt Island, FL
  106. Mark Archambeault. Northern Collegiate HS, Sarnia, Ontario, Canada
  107. Jessica Spare. Hudson MS, Hudson, KS
  108. Annie Doshna. Merritt Island HS, Merritt Island, FL
  109. Jennifer Heiser. Merritt Island HS, Merritt Island, FL
  110. Paul Bach. Woodford County HS, Versailles, KY
  111. Jack J. Shen. Earl Haig SS, North York, Toronto, Ontario, Canada
  112. Daniel Cheng. Sycamore JHS, Cincinnati, OH
  113. Daniel Thomas. Grissom HS, Huntsville, AL


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