Master row randomization in Excel using the classic helper column method or the dynamic SORTBY function.

Select winners in Excel using classic INDEX formulas or modern CHOOSEROWS and TAKE combinations.

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

When George Clooney took a seat in a theater to prepare for a scene in Jay Kelly where his character, the titular movie star, is about to receive a life achievement award, he wasn't prepared for what ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Memory is the faculty by which the brain encodes, stores, and retrieves information. It is a record of experience that guides future action. Memory encompasses the facts and experiential details that ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Tracking spending is the first step to getting your finances in order. An expense tracker app can make it a lot easier to account for every dollar as you spend it, rather than sitting down with a ...

As of October 2025, the World Economic Outlook database and supporting documents will be accessible through the IMF Data portal. The World Economic Outlook (WEO) database is created during the ...

It's important to review the impact our guidance has on health and care. We work with partners including Public Health England, NHS England and NHS Improvement to assess services and support ...