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Calculate the number 685

NUMBERMANIA: Calculate the number 685 using numbers [6, 1, 4, 4, 63, 175] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 23

The first user who solved this task is Djordje Timotijevic.

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Rory Albanese: Kids With ADD

Follow this sentence: children who cant pay attention are considered to have a disorder. Children who cant pay attention? I dont know, he just wont focus. He could be seven. That could be the issue.

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Sir William Bragg

Born 2 Jul 1862; died 12 Mar 1942 at age 79. Sir William Henry Bragg was a pioneer British scientist in solid-state physics who was a joint winner (with his son Sir Lawrence Bragg) of the Nobel Prize for Physics in 1915 for research on the determination of crystal structures. During the WW I, Bragg was put in charge of research on the detection and measurement of underwater sounds in connection with the location of submarines. He also constructed an X-ray spectrometer for measuring the wavelengths of X-rays. In the 1920s, while director of the Royal Institution in London, he initiated X-ray diffraction studies of organic molecules. Bragg was knighted in 1920.

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