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Calculate the number 175

Calculate the number 175 using numbers [4, 4, 6, 5, 20, 100] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 64

The first user who solved this task is Sanja Šabović.

#brainteasers #math

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Benjamin Silliman

Died 24 Nov 1864 at age 85 (born 8 Aug 1779). American geologist and chemist who founded the American Journal of Science and wielded a powerful influence in the development of science in the U.S. He was Yale's first professor of chemistry and natural history (1802). He is best known for researching the chemical composition of a meteorite that fell in 1807, his report being the first scientific account of any American meteor, showed that meteorites are made of materials that exist on the earth. The mineral sillimanite was named after Silliman. In 1811, while experimenting with the oxy-hydric blow-pipe, he reduced many minerals previously considered as elements. His son, also named Benjamin Silliman, became a chemist who recognized that petroleum could be distilled into separate fractions.

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