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https://en.wikipedia.org/wiki/Binary
https://en.wikipedia.org/wiki/Binary_number
https://en.wikipedia.org/wiki/Binary_star
https://en.wikipedia.org/wiki/Binary-coded_decimal
https://en.wikipedia.org/wiki/Binary_prefix
How to Make Money on Binary Options Trading at Home 2018
BinaryOptions.com - Binary Risk Analysis & Options Trading
A Guide to Trading Binary Options in the U.S. | Investopedia