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What is the missing number?

Correct answers: 66

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

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A woman took her dog to the pa...

A woman took her dog to the parlor for a haircut and asked what it would cost. Being told that it would be fifty dollars, she was outraged. "I only pay thirty for my own haircut," she said.
The groomer said, "That may be true, but then you don't bite!"

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Edison executes his first patent

In 1868, Thomas Edison executed his first patent, by signing and dating his application. It was received by the U.S. Patent Office with an application date of 28 Oct 1868, and it was issued as No. 90,646 on 1 Jun 1869. His invention was an “Electrographic Vote-Recorder,” the first of its kind, which he designed for use by legislative bodies, such as the U.S. Congress, who would have been enabled to vote for or against an issue by turning a switch to the right or left. His idea remained unappreciated. Thus, his first patented invention was, in effect, a failure. His next invention was a Printing Telegraph, U.S. Patent No. 91,527, issued 22 Jun 1869. He eventually held over 1,500 patents.«

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