Find number abc
If 9b80a - 90ac7 = bbbb find number abc. Multiple solutions may exist.Correct answers: 9
#brainteasers #math
Ironing tableIn 1874, the prolific black American inventor Elijah J. McCoy patented an ironing table (No. 150,876). He is best known for his lubricating devices for steam engines for which he held numerous patents. |