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Calculate the number 4300

NUMBERMANIA: Calculate the number 4300 using numbers [8, 9, 3, 7, 25, 442] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 7

The first user who solved this task is Nasrin 24 T.

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Iliza Shlesinger: Bumper Sticker

It said, War Is Not the Answer. I disagree. I think war absolutely is the answer. And if you dont agree with me, happy Fourth of July.

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Edison patent

In 1876, Thomas A. Edison was issued three patents for "Duplex Telegraphs" (U.S. No. 178,221; -3). These were for "an Improvement in Duplex Telegraphs" which enable a transmitted signal be sent on the same wire that could be receiving a signal. In patent 178,222, Edison describes "A balanced battery is used for transmitting when the balance is disturbed. An electromagnet is used, through which both the received and transmitted pulsations pass, and the connections are made so that the action of the current sent is balanced, while that coming from the distant station is operative, to work a balanced relay and local circuit or sounder."

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