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Eugenio G. F. de Kereki

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last 3 solved tasks
The aim is to place the some numbers from the list (3, 5, 6, 23, 25, 26, 30, 48, 64, 66, 67) into the empty squares and squares marked with A, B an C. Sum of each row and column should be equal. All the numbers of the magic square must be different. Find values for A, B, and C. Solution is A+B*C.
Remove 4 letters from this sequence (AKUKTHORDS) to reveal a familiar English word.
If 11c7a + cbbc0 = 101caa find number abc. Multiple solutions may exist.

Hearing aid

In 1880, the first U.S. patent for an electric hearing aid was issued to Francis D. Clarke and M.G. Foster, titled a Device for Aiding the Deaf to Hear (No. 226,902). The device employed bone conduction by which sound is passed through vibration of the skull bone. It was not until 1901 that the first commercially available hearing aid was produced, the Acousticon, invented by Miller Reese Hutchinson..

Microsoft Support

A Microsoft support man goes to a firing range. He shoots 10 bullets at the target 50m away. Then the supervisors check the target and see that there's not even a single hit, and they shout to him that he missed completely. So he tells them to recheck, and gets the same answer. Then he put his finger at the top of the gun and shoots, blasting off his finger. When he saw it he shouted back "I don't know, it's working perfectly here, the problem must yours..."

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