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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)

Alumni Liaison

Prof. Math. Ohio State and Associate Dean
Outstanding Alumnus Purdue Math 2008

Jeff McNeal