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Find number abc

If b1a30 + 6c047 = c0a77 find number abc. Multiple solutions may exist.

Correct answers: 30

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

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I haven't spoken to my wife f...

I haven't spoken to my wife for 18 months. I don't like to interrupt her.

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Time recorder

In 1889, Alexander Dey patented the dial time recorder. This style of time clock was first manufactured by the Dey Company and then as Industrial Time Recorders (ITR) after 1907. It used a dial that employees were required to point to their assigned number, and press to record the time of arrival and departure. The numbers of the employees and times were recorded on a sheet of paper wrapped around a drum.

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