Any number greater than 1 can be co-prime.
There are 15 prime numbers up to 50.
The prime numbers up to 50 are: 2,3,5,7,11,13,17,23,29,31,37,41,43,47.
The given numbers of 15 and 35 are not prime numbers but they add up to 50
2+7+41=50
5 is the only prime number in which 5 is a factor.
Prime numbers up to 50 are: 2 3 5 7 11 13 17 19 23 29 31 37 41 43 and 47
All of them. Any number greater than one can be relatively prime.
The quoted numbers are all PRIME Numbers. The next prime numbers after '11' are , 13 ,17,19,23,29,31,37,41,43,47, up to '50' Prime Numbers , like ordinary numbers, go to infinity. NB After '2' , there are no. even prime numbers. They are all ODD NUmbers.
The prime numbers between 1 and 50 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, and 47.
There are 15 prime numbers in the range 0-50. They are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43 and 47.
60, 66, 70, 78, 84 and 90.
I suggest you look up a table of prime numbers. Any integer treater than one that is not in the table of prime numbers is a composite number.