The @ symbol can also appear in regular formulas outside of tables when Excel thinks you're trying to reference a single value from a range. If you see it pop up unexpectedly, it usually means Excel ...

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Most of us have little trouble working out how many milliliters are in 2.4 liters of water (it's 2,400). But the same can't be said when we're asked how many minutes are in 2.4 hours (it's 144).

D espite its age, Excel continues to evolve with new functions being added over time. There are newer better Excel functions ...