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Calculate the number 804

NUMBERMANIA: Calculate the number 804 using numbers [5, 2, 2, 9, 36, 188] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

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I wasn't originally...

“I wasn't originally going to get a brain transplant, but then I changed my mind.”

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Smallest vertebrate

In 2006, the discovery of the world's smallest vertebrate - the Paedocypris progenetica fish - was published in the Proceedings of the Royal Society of London, Series B. A tiny member of the carp family, the transparent fish was discovered in the highly acidic peat swamps of the Indonesian island of Sumatra. Mature females are only 7.9mm (3/10 in) in length; the males measure up to 8.6mm. The dark tea-coloured swamp waters in which they live have a pH of 3, which is 100 times more acidic than rainwater.

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