Messy Excel formulas are more than just an eyesore—they're harder to maintain. Every repeated cell reference and tangled parenthesis makes your work difficult to audit, edit, and share. That's why you ...

Excel gives the answer 10. If you have a mathematical background, you’ll know why Excel gives a different answer to such a simple calculation — and why, technically, Excel is right. If you don’t have ...

Some elements, particularly the transition metals, do not always have the same valency in their different compounds. The valency of these elements is usually given in roman numerals inside brackets.