- There is no proof as to who built the Taj Mahal.
- 2 and 5 are the only prime numbers that end with a 2 or a 5..
- In 1878 the first telephone book made contained only 50 names.
- It takes 5 years for an oyster to produce a medium sized pearl.
- Much of the work done by Leibniz and Newton is based on theories by French philosopher Rene Descartes. As well as his many contributions to philosophy, Descartes also had a huge impact on mathematics, creating analytical geometry, developing a system that describes geometry using algebra, contributing to optics and much more..
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