A Theorem About 1 and 0

Well, I don’t know if this is known already, so if it is, please comment the name of the theorem. If it isn’t, then someone put a comment on what it should be called. A number with all of its digits less than 2 (which means only 0 and 1) and has less than 10 digits, multiplied with a number with the same characteristics has a product reverse of that of another set of two numbers with the same digits as the first set but has its digits reversed. Example below.
111111111 x 111111101 = 12345677876543211
111111111 x 101111111 = 11234567877654321

Thanks to Kirk Bamba for this submission!


15 Really Odd Geographical Facts

Not really math, but pretty neat!


Our planet is filled with many wonderful geographical and geological anomalies and mysteries. So many so, that we may never truly unlock all of the secrets that nature has tucked away. This is a list of 15 of the more unusual or outright bizarre facts relating to geography, geology, and the earth.

Thanks to Bole982 for this submission!