MATH PUZZLE: Can you replace...
[2833] MATH PUZZLE: Can you replace... - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 4174 - The first user who solved this task is Donya Sayah30
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MATH PUZZLE: Can you replace...

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 4174
The first user who solved this task is Donya Sayah30.
#brainteasers #math #riddles
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Question time....

Mr. Smythe had been giving his second-grade students a short lesson on science. He had explained about magnets and showed them how they would pick up nails and other bits of iron. And now it was question time....

"Class," he said, "my name begins with the letter 'M,' and I pick up things....What am I?"

A little boy on the front row said, "You're a mother."

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Edison patent

In 1870, Thomas A. Edison was issued a U.S. patent for an “Improvement in Magneto Electric Machines” (No. 222,881). The object of his improvement was to increase the effectiveness and cheapen the construction of the revolving armature. He designed the armature of a cylinder of wood with two iron heads between which fine iron wire was wound on the cylinder. At the ends of the cylinder, outside the iron heads there were disks of hard rubber or other insulating material, and the wires forming the induction helix are wound lengthwise of the cyclindres into notches in the edges of the disk.
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