Determine the value of the number ABCD
[772] Determine the value of the number ABCD - Determine the value of the number ABCD - #brainteasers #math - Correct Answers: 113 - The first user who solved this task is Djordje Timotijevic
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Determine the value of the number ABCD

Determine the value of the number ABCD
Correct answers: 113
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math
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Grandma

The family wheeled Grandma out on the lawn, in her wheelchair, where the activities for her 100th birthday were taking place. Grandma couldn't speak very well, but she could write notes when she needed to communicate.

After a short time out on the lawn, Grandma started leaning off to the right, so some family members grabbed her straightened her up, and stuffed pillows on her right. A short time later, she started leaning off to her left, so again the family grabbed her and stuffed pillows on her left.

Soon she started leaning forward, so the family members again grabbed her, then tied a pillowcase around her waist to hold her up. A grandson, who arrived late, came up to Grandma and said, "Hi, Grandma, you're looking good! How are they treating you?"

Grandma took out her little notepad and slowly wrote a note to the grandson...

"They won't let me fart."

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Sulfa drugs

In 1951, a patent for improved sulfonamide drugs was issued to James W. Clapp and Richard O. Roblin, (U.S. No. 2,554,816). Sulfa drugs are members of a group of synthetic antibacterial drugs containing the sulfanilamide molecular structure. Sulfonamides (first observed in 1932) were the first chemical substances that were systematically used to cure and prevent bacterial infections in humans. Of the 5,000 sulfa drugs prepared and tested, fewer than 20 continue to have therapeutic value because resistant strains of bacteria have developed. More potent antibacterial drugs have largely replaced the sulfa drugs. They remain useful in the treatment of urinary tract infection.[Image: The general formula of the patented drugs is a 5-membered heterocyclic sulfonamide having at least 3-hetero atoms. X is carbon or nitrogen which may have substituents such as hydroxyl, amino, acylamino or sulfonanide radicals; R and R' can be hydrogen, alkyl, alkaryl or aryl radicals; Y is sulfur or nitrogen (which in the case of nitrogen may have substituents such as an aryl or alkyl radical. Also X, Y may be part of a fused ring system in which the 5-membered ring shown forms a ring fused with a 6-membered heterocyclic ring such a pyridine.]
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