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Calculate the number 1689

NUMBERMANIA: Calculate the number 1689 using numbers [5, 3, 1, 1, 28, 559] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 0

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I've taken up photography

I've taken up photography because it's the only hobby where you can shoot people and cut their heads off without going to jail.

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Franklin Hiram King

Born 8 Jun 1848; died 4 Aug 1911 at age 63.American agricultural scientist who promoted use of the cylindrical tower silo and invented a gravity system of ventilation for dairy barns that was widely used until electrically powered blowers became commonly available. He researched in wide-ranging applications of physics to agriculture. Especially interested in soil physics, he studied water-holding capacities, moisture requirements of plants, aeration, movement of water in soils, and soil fertility. King demonstrated that cylindrical silo structures were not only the strongest form, but also reduced spoilage. He studied the efficiency of farm machinery and the draft of farm implements, the construction of rural roads, and the first year-long study of the power generated by farm windmills.

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