Update README.md

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README.md

@@ -16,3 +16,26 @@ at companies from small to large.
 ## Data functions, formulas, and shortcuts
 The Excel software program includes many functions, formulas, 
 and shortcuts that can be used to enhance its functionality.
+
+-- MS-Excel has over 475 formulas in its Functions Library, from 
+simple mathematics to very complex statistical, logical,
+and engineering tasks. 
+
+-- 5 Functions of Excel that  Should Know
+* 1.VLookup Formula.
+* 2.Concatenate Formula.
+* 3.Text to Columns.
+* 4.Remove Duplicates.
+* 5.Pivot Tables.
+
+## 3 common uses for excel :
+The three most common general uses for spreadsheet software are
+to create budgets, produce graphs and charts,
+and for storing and sorting data
+
+## what is analysis excel
+the process of changing the values in cells to see how those 
+changes will affect the outcome of formulas on the worksheet
+
+
+