Calculate the number 835
[7817] Calculate the number 835 - NUMBERMANIA: Calculate the number 835 using numbers [7, 1, 5, 7, 21, 800] 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 835

NUMBERMANIA: Calculate the number 835 using numbers [7, 1, 5, 7, 21, 800] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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After working most of her life...

After working most of her life Grandma finally retired. At her nextcheckup, the new doctor told her to bring a list of all the medicinesthat had been prescribed for her.
As the young doctor was looking through these, his eyes grew wide as herealized she had a prescription for birth control pills. "Mrs. Smith, doyou realize these are BIRTH CONTROL pills?"
Yes, they help me sleep at night. "
"Mrs. Smith, I assure you there is absolutely NOTHING in thesethat could possibly help you sleep!
She reached out and patted the young Doctor's knee. "Yes, dear,I knowthat. But every morning, I grind one up and mix it in the glass oforange juice that my 16 year old granddaughter drinks . . . and believeme, it helps me sleep at night. "
You gotta love Grandmas!
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Eugen Goldstein

Died 25 Dec 1930 at age 80 (born 5 Sep 1850).German physicist who discovered and named canal rays (1886) which emerge through holes in the anodes of low-pressure electrical discharge tubes (later shown to be positively charged particles). Earlier, he coined the term “cathode ray”(1876) emitted from a cathode. He was the first to see that they could cast a shadow, and were emitted at right angles to the surface. He also investigated the wavelengths of light emitted by metals and oxides when canal rays impinge on them. When the Berlin Urania, opened in 1889 it had five scientific departments and a “science theatre,”it was Goldstein who had recommended the “hall of physics in which the visitor could experiment on his own.” Students of his who continued his work included Wilhelm Wien and Johannes Stark.«Image: The tube with which Goldstein discovered canal rays in 1886.
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