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How-To Geek on MSN

A Step-by-Step Guide to Using SUMIFS in Microsoft Excel

The SUMIFS function works in a similar way with text as with numbers, but there are two key differences. First, text in Excel ...
The Pricer

How Much Does It Cost to Scramble NATO Jets?

Scrambling jets is fast, loud, and expensive. This piece shows the math behind a scramble: fighter hours set the floor, ...