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Calculate the number 1639

NUMBERMANIA: Calculate the number 1639 using numbers [2, 3, 9, 3, 47, 228] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 29

The first user who solved this task is Allen Wager.

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Confident and confidential

Son - "Dad whats the difference between confident and confidential?"

Dad - "Hmm. You are my son. Of that I am confident. Your friend Timmy is also my son. That's confidential."

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Malcolm Sim Longair

Born 18 May 1941.Scottish astronomer, noted for his scholarship and teaching, who in 1980 was appointed by Royal Warrant Astronomer Royal for Scotland, a post he held until 31 Dec 1990. The title of Astronomer Royal for Scotland was created in 1834. As Jacksonian Professor of Natural Philosophy and head of Cavendish Laboratory at the University of Cambridge, UK, his research interests include the emission from dust in the distant universe, observational cosmology, galaxy formation, and gravitational lensing. He is the current Public Understanding of Physics Fellow of the Institute of Physics

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