9 + 7
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Between the two numbers there are 49.
The GCF of any two odd numbers is always odd because odd numbers don't have any even factors. The GCF of any two even numbers is always even because even numbers are divisible by two and any common factors would have at least one two in common. The GCF of an even and an odd number is odd because odd numbers don't have any even factors.
The GCF of any two odd numbers is always odd. The GCF of any two even numbers is always even. The GCF of an odd and an even number is always odd.
Any two odd numbers will have an odd product and an even sum.
1,3,5 and 7The first four odd numbers are 1, 3, 5 and 7. Odd numbers are not divisible by two.