Often, when we buy a new smartphone, we think it will last for many years. But did you know that every phone also has an expiry date? Yes, just like any electronic device has a fixed lifespan, your ...

If you use Excel 40 hours a week (and those are the weeks you are on vacation), welcome to the MrExcel channel. Home to 2,400 free Excel tutorials. Bill "MrExcel" Jelen is the author of 67 books about ...

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