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Calculate the number 1383

NUMBERMANIA: Calculate the number 1383 using numbers [2, 9, 3, 6, 44, 570] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

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Under the kilt...

The American tourist stood staring at the highland sentry standing guard outside Edinburgh Castle.

After a few minutes she went up to the sentry and asked 'I've always wanted to find out what's worn under the kilt'.

The sentry replied: 'There is nothing worn, Ma'am, its all in perfect working order'.

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Alfred Stock

Born 16 Jul 1876; died 12 Aug 1946 at age 70. German chemist whose Stock system (1919) is used for inorganic chemical names, now with roman numerals for oxidation numbers, such as iron(II) chloride. He studied under Emil Fischer and Henri Moissan, and became a professor in 1906. From about 1909, he researched boron and silicon hydrides, for which he developed high-vacuum techniques. Stock showed a compound of phosphorus and sulphur could be substituted for the poisonous phosphorus used in matches. From Mar 1924, when he became aware that his years of exposure to mercury vapours in the laboratory had resulted in his chronic mercury poisoning, he initiated research in the pathology of mercury. He devised analytical methods to detect minute amounts of mercury. By avoiding exposure, even amalgam tooth fillings, he recovered his health.«

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