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Calculate the number 920

NUMBERMANIA: Calculate the number 920 using numbers [4, 3, 7, 7, 28, 834] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 1

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Mike Vecchione: Private Detective School

I went online to become a private detective. It was a private detective school online, and I paid online. But then I never heard from them again. I thought to myself, I either got ripped off or this is my first case.

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Thomas Davenport

Died 6 Jul 1851 at age 48 (born 9 Jul 1802). American inventor of what was probably the first commercially successful electric motor, which he used with great ingenuity to power a number of established inventions. Though several other inventors had experimented with motors, Davenport was the first to secure a US patent (No. 132 on 25 Feb 1837) for his direct current motor. He incorporated the concept of the electromagnet invented by Joseph Henry in a way that produced a rotary motion using his own idea of a commutator and brushes to control the direction of current flow. He used a motor he built to power shop machinery, and also built the first electric model railroad car.

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