This brain teaser is a quick test of intelligence. Who do you think will fall? Set a timer for 12 seconds and get down to ...

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W e love testing our brains every day. Whether it's with a tricky puzzle, learning a new language or doing a simple sudoku ...

Brain teasers are tricky puzzles or riddles that challenge the way you think. They often look easy at first, but solving them usually takes logic, attention to detail, or a different way of thinking.