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Jaya Semara Putra

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If acc90 - 5ccc3 = b00ba find number abc. Multiple solutions may exist.
If 22c15 + cb035 = bac50 find number abc. Multiple solutions may exist.
If 8c1ba + 2cb66 = 1cc72b find number abc. Multiple solutions may exist.

Vitamin A

In 1947, the first full synthesis route for vitamin A was found by Dutch chemists, Jozef Ferdinand Arens and David Adriaan van Dorp. Later in 1947, a team headed by O. Isler also synthesized vitamin A using a method more suitable to produce commerical quantities. In 1913, Thomas B. Osborne and Lafayette Mendel had shown experimentally with rats that butter contained a factor responsible for growth development. Their work was confirmed (1913) by Elmer McCullum and Marguerite Davis who also identified a fat-soluble nutrient in butterfat and cod liver oil. It became known as vitamin A, and its chemical structure was determined in 1931 by Paul Karrer.«(Ref Arens and van Dorp, Synthesis of Vitamin A aldehyde, Nature 160: 187, 1947)

A man joins a big corporate em...

A man joins a big corporate empire as a trainee. On his very first day of work, he dials the pantry and shouts into the phone, "Get me a coffee, quickly!"
The voice from the other side responded, "You fool you've dialed the wrong extension! Do you know who you're talking to, dumbo?"
"No," replied the trainee.
"It's the CEO of the company, you fool!"
The trainee shouts back, "And do you know who YOU are talking to, you fool?!"
"No," replied the CEO indignantly.
"Good!" replied the trainee, and puts down the phone.
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