Archive for July, 2011

T-Shirt design: Do you have free will?

Another t-shirt design I made. I threw it up on my Zazzle store for the cheapest possible price.

Vampire Numbers Visualized

Vampire numbers are fairly interesting. Vampire numbers are numbers whose product contains the same digits as the two vampire numbers. For example, 21 x 60 = 1260. The two vampire numbers (called “fangs”) must be the same length and both cannot end with a zero. A longer example is 68088 x 45321 = 3085816248. You [...]

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