Calculate the number 399
[7228] Calculate the number 399 - NUMBERMANIA: Calculate the number 399 using numbers [4, 2, 7, 4, 22, 670] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 2
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Calculate the number 399

NUMBERMANIA: Calculate the number 399 using numbers [4, 2, 7, 4, 22, 670] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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Group swimmers at the Olympics

Group swimmers at the Olympics aren't given much choice.
For them, it's synchro swim.
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Wrights' third airplane

In 1905, Orville and Wilbur Wrightestablished a new world airplane flight record with their third powered aircraft. Orville flew the Flyer IIIa distance of 24.2 miles (38.9-km) in just over 38 minutes at Dayton, Ohio. This was more than 29 times around their airfield, and at an average speed of about 38-mph. This progress came less than two years since their first historic flights at Kitty Hawk, North Carolina, on 17 Dec 1903, when their greatest flight distance that day was 852 feet. With their Flyer III they had their first really practical airplane.
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