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Four of a sample of 150 computers will be selected and tested. How many ways are there to make this selection? Type a numerical answer in the space provided. Do not type any commas or spaces in your answer.
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Four of a sample of 150 computers will be selected and tested. How many ways are there to make this selection? Type a numerical answer in the space provided. Do not type any commas or spaces in your answer.

User Tran Ho
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This is a question of combinations.
The number of ways of selecting 4 computers from 150 computers = 150C4= 20260275

There are 20260275 ways of selecting 4 computers from 150 sample of computers.
User Chrstphrchvz
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