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Camachojenny12:

small company has 20 employees. Six of these employees will be selected randomly to be interviewed as part of an employee satisfaction program. How many different groups of six can be selected?

Mercury:

nCr, where you're choosing r items at once out of n items \[nCr = \frac{ n! }{ r!(n-r)!}\] in this case, n = 20 and the group is r = 6, plug in and evaluate

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