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محمد حيدري

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last 3 solved tasks
Solve Mathematical Puzzle: 4, 5, 6, 8, 11, 16, ?, 37, 58, 92
If 5119b + 22acb = 7b276 find number abc. Multiple solutions may exist.
MATH PUZZLE: Can you replace the question mark with a number?

Dental mallet

In 1875, the first U.S. patent for a dental mallet, or "Electro-magnetic Dental Pluggers" was issued to William G.A. Bonwill of Philadelphia, Pa. (No. 170,045). His tooth-filling device was used to drive gold into a tooth cavity. He derived the idea from observing the sounder of a telegraph key (while at the Continental Hotel in Philadelphia, 27 Feb 1867). The automatic tool was designed to be "manipulated as readily as the usual hand-tools." An electromagnet functions to drive a mallet, while also breaking the circuit to allow the spring-loaded mallet to return, at which point the circuit is closed, and the cycle repeated under the control of the operator.*

Nightie

A man and his wife were celebrating their 50th anniversary, so he bought her a $100 see-through nightie.
That night, she was getting ready for bed and realized the nightie was still in its box downstairs.


Walking naked through the house, she passed her husband who said: "Jesus, for $100 they could've at least ironed it!"

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