- Monopoly is the most played board game in the world.
- Gunpowder is formed by mixing charcoal, saltpetre and sulphur.
- The WD in WD-40 stands for Water Displacer.
- Worker ants may live for 7 years and the queen up to 15.
- The Hindu-Arabic numeral system began developing as early as the 1st century with a full system being established around the 9th century, forming the basis of the numerical digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 that we use today..
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