Alex Bellos' Monday puzzle in The Guardian is the Three Switches Probem:
Downstairs in a house are three identical on-off switches. One of them controls the lamp in the attic. The puzzle is to work out which switch controls the lamp.
The rules are as follows. You are allowed to manipulate the switches all you like, and then you are allowed only one trip to the attic. How do you do it?
The FTC and the Justice Department are investigating claims that TikTok, the popular social media app with close ties to China, violated a 2019 agreement to protect children's privacy. READ THE REST
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While mosquitoes have certainly earned their title as the deadliest animal on earth, their impact on most of our lives is usually a lot less consequential. But even though they… READ THE REST
