There is only one number that can go into both 5 and 6 evenly. That number is 1.
There are 4 positive and 4 negative numbers that go into 15. They are: 1,3,5,15,-1,-3,-5, and -15.
All these go into both 30 and 50: 1, 2, 5, 10.
The only number that can go into both numbers is 5
The HCF of both numbers is 1
The LCM of both numbers is 60
5
Both 5 and 7 are prime numbers, so the only number that could go into both evenly would be 1.
1 and 5.
The LCM of both numbers is 365
1 and 5.
How about: 3 and 5
5 and 125