Calculate the number 4405
[7823] Calculate the number 4405 - NUMBERMANIA: Calculate the number 4405 using numbers [1, 4, 5, 3, 30, 864] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 1
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Calculate the number 4405

NUMBERMANIA: Calculate the number 4405 using numbers [1, 4, 5, 3, 30, 864] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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April Fool's Day - Suggestions

1. Put marbles in the hubcaps of someone’s car.
2. Leave cryptic notes warning someone of an impending prank then do nothing all day.
3. Rubber band the sprayer on the kitchen sink into the “on” position.
4. Place a pair of pants and shoes inside the only toilet stall in a rest room to make it appear someone is using it all day.
5. Pour vegetable oil on the exhaust of someone’s car so it will smoke when started up.
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Wireless telephone at White House

In 1919, President Wilson used a radio telephone set up on the south portico of the White House to direct the maneuvers of a dozen army airplanes flying over the Potomac river several miles away. His telephoned directions went direct to the flight commander in the air. The instrument was similar to those used by American aviators in France in the latter part of World War I. Col. C. C. Culver actively developed the equipment. He began the project in Aug 1910. No new invention was needed, only adaptation and adjustment of existing techniques. By Aug 1916, he was able to send a radio telegraph signal from a plane. Enlisting expert help from the telephone companies, by Oct 1917, voice messages could be send between a plane and the ground. The system was put into service for military wartime use.«
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