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Find number abc

If b8b67 - 3a0c0 = 2abb7 find number abc. Multiple solutions may exist.

Correct answers: 53

The first user who solved this task is Djordje Timotijevic.

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Take Your Child to Work Day

A father took his eight year old daughter to work on "Take your kid to Work Day"

As they were walking around the office the girl started crying and getting very upset.

As the staff gathered around, she sobbed loudly and said "Daddy, where are all the clowns you said you worked with".

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Black American patent

In 1897, a U.S. patent for an improvement in "Casting Composite or Other Wheels" was issued to black American inventor E.R. Robinson (No. 594,286). It gave a method for casting wheels wherein the outer sides are of one metal and the interior portions are of another metal. The importance was not only to enable casting a metal of high electrical conductivity, such as brass, in a groove of an iron trolley wheel - but also to permit an entirely new contruction consisting of two outer disks or flanges and an intermediate, uniting portion, which extends from the contact portion of the wheel with a web extending to the centre and an integral bushing. Robinson also held a previous patent, issued four years earlier, for an "electric railway trolley."[Image: plan view of bottom section of a wheel three-part mold]

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