What number am I?
[3265] What number am I? - I am an odd number; take away an alphabet and I become even. What number am I? - #brainteasers #math #riddles - Correct Answers: 83 - The first user who solved this task is On On Lunarbasil
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What number am I?

I am an odd number; take away an alphabet and I become even. What number am I?
Correct answers: 83
The first user who solved this task is On On Lunarbasil.
#brainteasers #math #riddles
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Sherlock Holmes in Heaven

Sherlock Holmes stood at the Gates of Heaven pulling at his pipe awaiting his turn. "I'll let you in," said St. Peter, gesturing toward the heavenly throngs behind him, "if you'll tell me who among these was the first mortal.""Elementary, my dear St. Peter," said the great detective, "he's the one without a bellybutton."
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First electron tube

In 1904, the first electron tube, a diode thermionic valve, was invented by John Ambrose Fleming. The valve consists of a carbon or tungsten filament lamp, to which is added a metal plate (insulated from the filament), and a connecting wire brought through the glass wall of the bulb to a third terminal outside. When battery current is applied to the filament making it incandescent, the space between the filament and the insulated plate will be found to conduct elecrons in only one direction. That means if the valve is connected in a circuit in with an oscillating current, its one-way conductivity will convert the oscillating current into a unidirectional current capable of actuating a telephone receiver. He notified Marconi in a 30 Nov 1904 letter.
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