How many 5-digit numbers (it...
[4693] How many 5-digit numbers (it... - How many 5-digit numbers (it cannot start with 0) are there that do not contain the numbers 3 and 5, and are multiples of 4? - #brainteasers #math #riddles - Correct Answers: 23 - The first user who solved this task is Manguexa Wagle
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How many 5-digit numbers (it...

How many 5-digit numbers (it cannot start with 0) are there that do not contain the numbers 3 and 5, and are multiples of 4?
Correct answers: 23
The first user who solved this task is Manguexa Wagle.
#brainteasers #math #riddles
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Imagination

Several weeks after a young man had been hired, he was called into the personnel manager’s office.
“What is the meaning of this?” the manager asked. “When you applied for the job, you told us you had 5 years’ experience. Now we discover this is the first job you’ve ever had.”
“Well,” the young man said, “in your ad you said you wanted somebody with imagination.”

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Clemens Alexander Winkler

Born 26 Dec 1838; died 8 Oct 1904 at age 65. German chemist who discovered the element germanium (1886). He had a background in managing a cobalt glassworks and then on the faculty of the Freiberg School of Mining. Early in his career, he developed new techniques for industrial gas analysis and developed the Winkler gas burette. When, having been asked by the Freiberg Academy of Mining to analyze the mineral argyrodite (a silver sulphide ore), he found that all the known elements it contained amounted to only 93% of its weight. After spending four months tracking down and isolating the remaining 7%, he found the new element he called germanium, for Germany. This turned out to be the third of the elements (eka-silicon) predicted by Dmitry I. Mendeleyev in 1871.«
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