what is formula?? and give some example

Answers
Answer:
In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a chemical formula. The informal use of the term formula in science refers to the general construct of a relationship between given quantities.
Examples:- HCO3, NaCl, OH, ZnO2, PbO2, Cr2O7
Explanation:
aare nahi formula, nahi chemical banate the woh, aur phir formula banate the
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Answer:
A Formula is a user defined instruction to perform calculations. It is an expression that can include cell addresses, numbers, arithmetic operators and parenthesis. It begins with equal to (=) symbol, followed by cell references and operators.
For Example: =A2+B2*5-SUM(E3:E5)
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