Mathematics and Multimedia Carnival #14

The Mathematics and Multimedia Carnival 14 is now live at Mathematics, Learning, and Web 2.0. The next edition will be hosted by Learning and Teaching Math and will be posted on September 26. To submit your articles to the next edition, click here. You might also want to explore the most recent carnivals: Math and Multimedia […]
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The Kaprekar constant 6174

In the mysterious 495, (1) we chose any 3-digit number, (2) arranged the digits in decreasing order forming the largest integer,  (3) arranged the digit in increasing order forming the smallest integer, and (4) subtracted the smaller from the larger. Each time a difference is obtained, we repeated steps 2-4 several times and we ended […]
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