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Four of a sample of 150 computers will be selected and tested. How many different ways are there to make this selection?
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Four of a sample of 150 computers will be selected and tested. How many different ways are there to make this selection?

User Gustav Karlsson
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The answer will be:

C(150,4) = 20260275, since the order does not matter, combination method applies here
User Irshad Khan
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