Find number abc
If a7bc7 + c8a3a = 1ab8ac find number abc. Multiple solutions may exist.Correct answers: 4
#brainteasers #math
Shutter patentIn 1883, black American inventor J. Cooper was issued a patent for his invention, "Shutter and Fastening" (No. 276,563). In the next few years, he also patented elevator devices. |