Calculate the number 8427
[1263] Calculate the number 8427 - NUMBERMANIA: Calculate the number 8427 using numbers [3, 9, 3, 8, 91, 950] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 29 - The first user who solved this task is Sanja Šabović
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Calculate the number 8427

NUMBERMANIA: Calculate the number 8427 using numbers [3, 9, 3, 8, 91, 950] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 29
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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Smart Blonde

A girl came skipping home FROM school one day. "Mommy, Mommy," she yelled, "we were counting today, and all the other kids could only count to four, but I counted to 10. See? 1, 2, 3, 4, 5, 6,7, 8, 9, 10!"

"Very good," said her mother.

"Is it because I'm blonde, Mommy?"

"Yes, Honey, it's because you're blonde."

The next day the girl came skipping home FROM school. "Mommy, Mommy," She yelled, "we were saying the alphabet today, and all the other kids could only say it to D, but I said it to G. See? A,b, c, d, e, f, g!"

"Very good," said her mother.

"Is it because I'm blonde, Mommy?"

"Yes, Honey, it's because you're blonde."

The next day the girl came skipping home FROM school. "Mommy, Mommy," she yelled, "we were in gym class today, and when we showered, all the other girls had flat chests, but I have these!" And she lifted her tank top to reveal a pair of 36Cs.

"Very good," said her embarrassed mother.

"Is it because I'm blonde, mommy?"

"No, Honey, it's because you're 25."

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Ultrasonic alarm

In 1953, the first U.S. patent for a burglar alarm operated by ultrasonic sound was issued to Samuel Bagno of New York City (No. 2,655,645) on a system for movement detection in a confined space by intruders or fire. It was manufactured as the Alertronic and first sold in Jun 1950. A sound source produced waves of 19,000 hertz, a frequency too high for normal human hearing. An intruder could be detected by the alarm by a difference in frequency of the reflected waves from the moving body (the Doppler effect). The device would then sound an alarm.
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