The prime numbers between 8 and 25 are: 11 13 17 19 and 23
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If you don't include 20, 25 and 30, all of the numbers in that range are relatively prime to 25.
If you don't include 20 and 30, all of them.
less than 100
There are 8 prime numbers between 1 and 20. The numbers are 2, 3, 5, 7, 11, 13, 17, and 19.
There are eight prime numbers under 20.