How many simple random samples of size 5 can be obtained from a population whose size is 48?

48/5=9.6 so about 9

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I disagree with this answer. I believe the correct answer is the number of ways of choosing five items from 48, assuming that they are distinct.

This is a precise number 48C4 = 48! / ( 4! ( 48 - 4 )! ) = 194580

Incidentally you can obtain a value for this expression using the Wolfram-Alpha website, given in the link, by entering the search term 48 choose 4.