Calculate the number 714
NUMBERMANIA: Calculate the number 714 using numbers [2, 2, 1, 1, 87, 542] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.Correct answers: 1
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Adding machineIn 1872, the first U.S. patent for an adding machine capable of printing totals and subtotals, called a "calculating machine," was issued to E.D. Barbour of Boston, Mass. However, it was not practical. (No. 133,188) |