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Rule of 72: What it is and how to use it
Here’s how the Rule of 72 works: Divide 72 by your expected annual interest rate (as a percentage, not a decimal). The answer is roughly the number of years it will take for your money to double. For ...
NPR's Ailsa Chang speaks to mathematician Eugenia Cheng about the Pascaline -- a 17th-century invention credited as the first mechanical calculator.
A scaling law relates the expected number of mutants to the total population size of cells in a spatially constrained but ...
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