20 numbers from 1 to 50 are relatively prime with 50. They are 1, 3, 7, 9, 11, 13, 17, 19, 21, 23, 27, 29, 31, 33, 37, 39, 41, 43, 47 and 49. The only factor any of those share with 50 is 1, making them relatively prime with 50.
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The numbers 23 and 29 are the only prime numbers between 20 and 30
Infinitely many numbers are relatively prime to 37. Because 37 is a prime number, all other numbers are relatively prime to it.
If you don't include 20, 25 and 30, all of the numbers in that range are relatively prime to 25.
Nine: 11, 13, 15, 17, 19, 23, 25, 27 and 29.
9000 integers.