Answer:
Step-by-step explanation:
It is only necessary to find the prime relative numbers for each n, that is, numbers that do not have in common divisor numbers different to 1 and -1.
Hence, we have to verify, number by number, if there is common divisors with the value of n.
- Ï(9)={1,2,4,5,7,8}=6
- Ï(15)={1,2,4,7,11,13,14}=7
- Ï(75)=1,2,4,7,8,11,13,14,16,17,19,22,23,26,28,29,31,32,34,37,38,
41,43,44,46,47,49,52,53,56,58,59,61,62,64,67,68,71,73,74}=41
