Albert Einstein used to ponder these 5 mind-melting questions for fun. Can you figure them out?

Albert Einstein used to ponder these 5 mind-melting questions for fun. Can you figure them out?

Albert Einstein pondered very complex ideas but tried to make them accessible.Hulton Archive / Stringer / Getty Images <ul> <li>Albert Einstein was well known for his thought experiments involving c… [+6412 chars]

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