Listing all of the factors of 60 we get:
1 2 3 4 5 6 10 12 15 20 30
Then removing the even factors, we are left with:
1 3 5 and 15.
2 3 5
Just 15.
Just 15.
Yes, the factors of all odd numbers are odd numbers.
Square numbers have an odd number of factors. There are no square numbers in that range.
None of them.
1 + 3 + 5 + 15 = 24
No numbers in that range have an odd number of factors.
Just 15.
Just 15.
Yes, the factors of all odd numbers are odd numbers.
Because 55 is an odd number. All the factors of odd numbers are odd.
Square numbers have an odd number of factors. There are no square numbers in that range.
1 and 5 are the factors of 20 which are odd.
None of them.
48 has both even and odd factors.
All nonzero numbers have factors. Some factors are even numbers, some factors are odd numbers.
All odd numbers have odd factors.