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Calculate the number 4721

NUMBERMANIA: Calculate the number 4721 using numbers [9, 7, 6, 5, 96, 697] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 0

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Boy Scouts

Boy Scouts from the city were on a camping trip. The mosquitoes were so fierce, the boys had to hide under their blankets to avoid being bitten. Then one of them saw some lightning bugs and said to his friend,

"We might as well give up. They are coming after us with flashlights."

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Station indicator

In 1893,a patent for a "Station Indicator" was granted to the black American inventor Thomas W. Stewart with William E. Johnson, of which they assigned a half interest to Levi and Albert Johnson, all of Detroit, Michigan (U.S. No. 499,895). The invention was for use in railway and street cars to indicate the different stations and streets the car is approaching. It was to automatically advance a belt of sign cards displaying the names of the stations and streets. This advance was activated by a lever on the outside of the car coming into contact with an inclined projection beside the track. An alarm would also sound. Another lever allowed the vehicle operator to reverse the movement of the belt for the return journey.

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