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rule of 70
Have we caught your interest?
Those who understand compound interest are destined to collect it. Those who don't are doomed to pay it - or so says a well-known source of financial advice. But what is compound interest, and why is it so important?
John H. Webb
The 2014 Plus advent calendar
In this year's advent calendar we bring you some of our favourite books and other mathematical toys, so you...
Mathematical mysteries: the Goldbach conjecture
Can every even number greater than 2 can be written as the sum of two primes? It's one of the trickiest...
When things get weird with infinite sums
What is 1-1+1-1+1-1+...? How infinite sums challenge our notion of arithmetic.
Information about information
What is information and how does it shape our reality?
Let them eat cake — and drink vodka
Language analysis shows how the nation's tastes have changed.
The philosophy of cosmology
Can philosophy help explain our Universe?
Tweets by @plusmathsorg
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