The US spy agency aka NSA publishes on its website a riddle written by one of their employees that ordinary people can try and solve. They are all published in "Puzzle Periodical." Of course, some of them may be easy to solve but others demand solid mathematical knowledge or the ‘ability to think abstractly.’ Here are 6 of the NSA’s brain-teaser you can try your hand at. Give it a try!
The NSA’s spying technology allows it to access to everyone’s information. Here are some things you should know about how it works.
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