Find number abc
[3393] Find number abc - If 7b996 - 2072a = ab27c find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 83 - The first user who solved this task is Sanja Šabović
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Find number abc

If 7b996 - 2072a = ab27c find number abc. Multiple solutions may exist.
Correct answers: 83
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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Wash the dog

A young boy, about eight years old, was at the corner grocery picking out a large size box of laundry detergent. The grocer walked over and trying to be friendly, asked the boy if he had a lot of laundry to do.

"Nope, no laundry," the boy said, "I'm going to wash my dog." "But, you shouldn't use this to wash your dog. It's very powerful and if you wash your dog in this, he'll get sick. In fact, it might even kill him."

But, the boy was not to be stopped and carried the detergent to the counter and paid for it, even as the grocer still tried to talk him out of washing his dog.

About a week later, the boy was back in the store to buy some candy. The grocer asked the boy how his dog was doing.

"Oh, he died," the boy said.

The grocer, trying not to be an "I-told-you-so" said he was sorry the dog died, but added, "I tried to tell you not to use that detergent on your dog."

"Well, the boy replied, "I don't think it was the detergent that killed him."

"Oh? What was it then?"

"I think it was the spin cycle!"

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Three element vacuum tube

In 1907, the three-element vacuum tube was issued a U.S. patent to its inventor, Dr Lee de Forest as a “device for amplifying feeble electric currents - such, for example, as telephone currents” (No. 841,387). The tube was evacuated, with some remaining conducting gas molecules, and it was suggested using for the heated electrode such material as platinum, tantalum or carbon. He had made a public annoucement of his device a few months earlier, on 20 Oct 1906 at a meeting of the American Institute of Electrical Engineers held in New York City. On 18 Feb 1908, he received another patent for the grid electrode tube (No. 879,532).
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