Math & Money

What is a vector?
Physicists, air traffic controllers, and video game creators all have at least one thing in common: vectors. What exactly are…
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A brief history of numerical systems
One, two, three, four, five, six, seven, eight, nine, and zero. With just these ten symbols, we can write any…
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The mathematics of sidewalk illusions
If you’re ever walking down the street and come across an oddly stretched out image, like this, you’ll have an…
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How to spot a misleading graph
A toothpaste brand claims their product will destroy more plaque than any product ever made. A politician tells you their…
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Can you find the next number in this sequence?
These are the first five elements of a number sequence. Can you figure out what comes next? Pause here if…
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How many ways are there to prove the Pythagorean theorem?
What do Euclid, twelveyearold Einstein, and American President James Garfield have in common? They all came up with elegant proofs…
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Where do math symbols come from?
In the 16th century, the mathematician Robert Recorde wrote a book called “The Whetstone of Witte” to teach English students…
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Why cant you divide by zero?
In the world of math, many strange results are possible when we change the rules. But there’s one rule that…
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The History of Money
The History of Money Money is considered as the most powerful thing to buy the stuff we need today. Well, money which…
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Opportunity Cost
Opportunity Cost Do you what is an opportunity cost? Well, it’s a term which is used in economics. Let me clear you this…
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