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What 5-digit number satisfies the following requirements?

What 5-digit number satisfies the following requirements? 1. No zeroes; 2. First two digits are the same; 3. Fourth digit is twice the first; 4. Last digit is twice the third; 5. Sum of all digits is 18

Correct answers: 127

The first user who solved this task is Djordje Timotijevic.

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Alfred Robles: Girl Like a Report Card

I want a girl that reminds me of my report card: her face has to be an A, she has to have double DDs, cause tonight I want to F.

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First telephone exchange

In 1878, the first commercial telephone exchange in the U.S. was installed at New Haven, Connecticut, and served 21 subscribers connected by a single strand of iron wire. For the first six weeks, the exchange was not operated at night. Instead of "hello," the first experimental shout was "Ahoy, ahoy." The first operator was George W. Coy. A Bell franchise had been awarded for New Haven and Middlesex Counties to Coy on 3 Nov 1877, paid for by incorporating as a company with two financial partners. Coy improvised his first crude switchboard, using carriage bolts, handles from teapot lids and bustle wire. The concept of interconnecting phone wires had been tried before by three other men, but none of these men attempted commercial telephone operations.

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