How many balls are there?
How many balls are there?Correct answers: 73
The first user who solved this task is Jasmina Atarac-Pantelic.
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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. |