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It looks like a simple math sum but has left people scratching their heads... can you solve it?
It looks simple at first, but this math problem has the internet stumped. Don't be fooled - it demands more brainpower than ...
For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...
Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).
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