The AND function takes each of the conditions inside the brackets and evaluates for their truth, and then multiplies the results together. TRUE = 1 and FALSE = 0. So if any condition is FALSE then the overall statement returns FALSE.

The formula for AND needs to be placed in brackets with each of the conditions separated by a comma. For example =AND(H1<1,G1>1)

In this instance the function will evaluate H1 to see if the value is less than 1. if it is then it will return TRUE or 1 and if not FALSE or 0. Then it will do the same for G1.

The two values are multiplied together and the answer is then either 1 or 0, TRUE or FALSE.

The Excel Help says:

One common use for the

ANDfunction is to expand the usefulness of other functions that perform logical tests. For example, theIFfunction performs a logical test and then returns one value if the test evaluates to TRUE and another value if the test evaluates to FALSE. By using theANDfunction as theargument of thelogical_testIFfunction, you can test many different conditions instead of just one.

I had an interesting question about conditional formatting posed in the comments by Stephen.

In a new sheet, I am trying to make a whole row turn red, green or amber depending on the value of one cell in that row, so I can easily see which jobs we have won, lost or are pending. Any 'IF' conditional formula I write gets thrown out by Excel. What am I doing wrong?

I promised him an answer so here it is.

For this exercise I am making some assumptions.

- You are using Excel 2007 format Excel spreadsheet (.xlsx or .xlsm). These instructions will not work in detail for Excel 2003, though the concept is similar.
- That there are 3 conditions we are looking for. Of course Excel 2007 allows more than 3 conditions so you can add more if you need. (One of the improvements on Excel 2003 that only allowed 3 rules)
- That the entire row is needed to be coloured. If you need a smaller section than change the formulas accordingly.
- That the entire worksheet needs this formatting. If you need a smaller section than change the formulas accordingly.
- That the conditional formats are going to be based on a cell that returns a specific result based on some other rule.

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