Revision as of 17:51, 27 January 2010 by Rharagut (Talk | contribs)

Post a mathematical riddle.

  • Come up with an algorithm that counts down from a number but does not employ the use of a minus sign or any form of subtraction. There are several solutions to this problem.


  • How can you add eight 8's to get the number 1,000? (only use addition)

(TQU: 888+88+8+8+8 = 1,000)

  • Start with six vertical lines. Then add 5 more lines to make nine.
  • Find the pattern: 8, 11, 15, 5, 4, 19, 7, 6, 3, 22, 2
  • If an analog clock shows the time 4:30, what is the angle between the hour and minute hand?

Alumni Liaison

Ph.D. 2007, working on developing cool imaging technologies for digital cameras, camera phones, and video surveillance cameras.

Buyue Zhang