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This video explains a shortcut for converting between Binary and other bases that are powers of 2. Specifically, we convert between BasThe same shortcut applies between Binary, Octal, and Hexadecimal, as well as between Base 3 and Base 9.
The shortcut that is demonstrated works because 4 and 8 are powers of 2, and because 9 is a power of 3. It is a GREAT time saver when you have bases that are related in this way, one is a power of the other.
![](https://i.ytimg.com/vi/l_cHxduSeAQ/maxresdefault.jpg)