Estimate how long it will take for an investment to double at any given interest rate with the “Rule of 72”. Remember, the Rule of 72 only applies to compound interest, not simple interest calculations.
Tag: Money
How Do Chips Make Credit Cards More Secure?
If you live in the United States, you might have recently gotten a credit card with a microchip on it. But what does this chip do that makes it any different than the magnetic strip on the back of the card?
via SciShow
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