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The world record for most dominoes toppled in a single chain — how many fell?
4.49 million
dominoes
4,491,863 exactly, give or take
At Domino Day 2009 in the Netherlands, 4,491,863 dominoes fell in one glorious chain reaction — a click-clack that took weeks to set up and minutes to destroy.SOURCEGuinness World Records, Domino Day 2009
Scale check: 4.49 million is roughly everyone in Birmingham.
Would you have guessed? You'll be way off.
Way Off is a game which asks questions like this every day. Guess by order of magnitude, watch the truth be revealed, and beat your friends by being the least wrong.
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