How Many Zeros Are There in n factorial

How many trailing zeros are there in 100! (! is read as factorial)? This is one of the most common problems in elementary school and middle school math competitions and for those who have memorized the strategy, this can be solved in less than five seconds. There are (100/5) + (100/25) = 24 trailing zeros […]
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7 Funny Math Comic Sites You Will Love

Mathematics is difficult to many, but it sometimes can be fun as well.  And luckily, there are creative and gifted people who never stop from making the subject light and funny. In this post, we look at some of the funny math sites on the web, particularly those who publish math web comics. Enjoy browsing […]
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Misconception About Venn Diagrams

Last year, I had a good discussion with some teachers about Venn diagrams. Several teachers commented that I should change the diagram below because it might give an impression that the number of rational numbers is the same as the number of irrational numbers. Sadly, I was not sure if I was able to explain […]
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