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Excel

COMBIN is a function in Excel that calculates the number of combinations for a given number of items. The function takes two arguments: the number of items and the number of repetitions. The function returns the number of combinations that can be made with the given number of items, with each item being used a different number of times.

The COMBIN function in Excel takes two arguments, the first being the number of items you want to choose from, and the second being the number of items you want to choose at a time. So, for example, if you wanted to choose two items from a list of five, you would use the function COMBIN(5,2), and if you wanted to choose three items from a list of six, you would use the function COMBIN(6,3).

The COMBIN function in Excel can be used to calculate the number of possible combinations for a given number of items. For example, if you have 3 items and want to know how many possible combinations there are, you would use the function as follows: =COMBIN(3,2) This would return 6, as there are 6 possible combinations of 3 items.

There are certain instances when you should not use the COMBIN function in Excel. One example would be when you are working with a list that has duplicate entries. The COMBIN function will only count unique entries, so if you have a list with duplicates, the function will not give you an accurate count. Another time you should not use the COMBIN function is when you are working with a list that has text values in it. The COMBIN function will only work with numbers, so if you have text values in your list, the function will not return a valid result.

There are a few similar formulae to COMBIN in Excel. One is the COUNTIF function, which counts the number of cells in a range that meet a certain criteria. Another is the VLOOKUP function, which retrieves data from a table based on a given value. Additionally, the SUMIF function calculates the sum of all cells in a range that meet a certain criteria. And finally, the AVERAGEIF function calculates the average of all cells in a range that meet a certain criteria.

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