Learn how GROUPBY passes both subset and full arrays into LAMBDA in Excel, letting you compute percent shares fast and explain results clearly.
Excel files bloat from ghost used ranges, formatting, pivot caches, and images. These quick fixes massively cut the size of ...
The world’s oceans are becoming dangerously acidic. A controversial proposal would raise the pH — by mixing chemicals into the water. By Ferris Jabr As the war grinds on, sophisticated Russian ...
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