Those would be all the integers higher than one that don't have 2 or 5 as a factor. In other words, those that end with 1, 3, 7 or 9.
333 integers.
Any prime number is relatively prime to any other prime number.
666 integers.
899
90 palindromes.
9000 integers.
Infinitely many numbers are relatively prime to 37. Because 37 is a prime number, all other numbers are relatively prime to it.
There are 30 such integers.
There are 2828 integers between 1000 and 9999.
333 integers.
Any prime number is relatively prime to any other prime number.
666 integers.
899
31.how do you solve?
Nine: 11, 13, 15, 17, 19, 23, 25, 27 and 29.
The prime numbers (factors) of 1000 are: 2 and 5
168 prime numbers under 1000.