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Find number abc

If 6bbc3 - 64ac6 = 2a9b find number abc. Multiple solutions may exist.

Correct answers: 33

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

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Black and White

Attending a wedding for the first time, a little girl whispered to her mother, "Why is the bride dressed in white?"
"Because white is the color of happiness, and today is the happiest day of her life."
The child thought about this for a moment, then said, "So why is the groom wearing black?"

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Stencil duplicator

In 1876, Thomas A. Edison received a U.S. patent for a stencil duplicator, titled “Improvement in Autographic Printing” (No. 180,857). Previously, patterns for embroidery or fresco painting used paper, perforated with numerous holes in the lines to be transferred, effected by dusting over the pattern with a fine colored powder rubbed through the holes. Edison invented a portable perforating stylus for writing or drawing, whereby a vertical perforating needle with a battery-operated reciprocating mechanism could be used to draw on a pattern paper. Further, he provided the pattern transfer using a permanent semi-fluid ink pressed through the pattern with a roller. The paper could be mounted in a hinged frame closing on a bed with a sheet of paper to receive a copy. This could then make multiple copies.«

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