Find number abc
[5996] Find number abc - If a70a0 - 11aa6 = 7b1c4 find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 23 - The first user who solved this task is Nílton Corrêa De Sousa
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Find number abc

If a70a0 - 11aa6 = 7b1c4 find number abc. Multiple solutions may exist.
Correct answers: 23
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math
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Britney and Christina Work Together

Britney Spears and Christina Aguliera were building a barn. While putting up the inside wall, Britney noticed that Christina was tossing every other nail into the garbage can.

Britney asked Christina, "Why are you throwing those nails away?"

Christina said, "The pointed end is on the wrong end of the nail."

Britney said, "Well, don't throw those away, we can use those on the outside wall!"

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Crystal rectifier

In 1874, a paper by Ferdinand Braun (1850-1918) was published in the Annalen der Physik und Chemie describing his discovery of the electrical rectifier effect. He observed that certain crystals of metal sulphides have a larger or smaller resistance to an electric current, depending on its direction of flow. He used a galena crystal, a semiconductor material composed of lead sulfide. He found the rectifying effect especially true if at least one of the electrodes was a pointed wire. Thus, he had discovered the point-contact rectifier effect, the first semiconductor device. This effect wasn't used until over 30 years later in the form of the “cat's whisker”crystal radio detector which ultimately led to the point-contact transistor first produced in 1948.
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