Find number abc
If 91cba + a6403 = 11b9bc find number abc. Multiple solutions may exist.Correct answers: 50
The first user who solved this task is Linda Tate Young.
#brainteasers #math
Edison patentIn 1909, a U.S. patent for "Waterproofing Paint for Portland Cement Buildings" was issued to Thomas A. Edison (No. 909,167) and another for "Waterproofing Paint for Portland Cement Structure" (No. 909,169). He also received a patent for "Waterproofing Fibers and Fabrics" (No. 909,806). |