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Calculate the number 9487

NUMBERMANIA: Calculate the number 9487 using numbers [1, 2, 7, 5, 12, 690] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 27

The first user who solved this task is Sanja Šabović.

#brainteasers #math #numbermania

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Why does it take so long to become a full professor?
Because it takes ten years to get tenure, and then another ten years to get your fingers back.

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Speed limit

In 1865, a lower speed limit - of 2 mph in town and 4 mph in the country - was imposed in Britain under the Locomotives and Highways Act. The "Red Flag" Act also required three drivers for each vehicle - two on the vehicle and one to walk ahead carrying a red flag. It was repealed in 1896, after nearly two decades of strong support from horse interests. The repeal of the act was celebrated by a 60 mile car run from London to Brighton - at the new and previously illegal speed of 12 mph. That first run is now commemorated each year on the first Sunday in November at 7:30 am. Vehicles built before 1904 take part in the London to Brighton run. Bronze medals are awarded to drivers arriving in Brighton by 4:00 pm.

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