Solve the magic square and find the product AxBxCxDxE
Solve the magic square and find the product AxBxCxDxECorrect answers: 41
The first user who solved this task is Sanja Šabović.
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Nail MachineIn 1791, Samuel Briggs and his son, Samuel Briggs, Jr. became the first father-son pair to receive a joint U.S. patent. Their invention was a nail-making machine. |