12 and 20
8,16
5,65,7
In base 10, all numbers whose last digit is a 5 or a 0
To find all pairs of numbers with a least common multiple (LCM) of 18, we need to consider the prime factorization of 18, which is 2 x 3^2. Any pair of numbers whose prime factorization includes 2 and/or 3^2 will have an LCM of 18. So, the pairs could be (2, 18), (3, 18), (6, 18), (9, 18), and (18, 18). These pairs have an LCM of 18 because they include the prime factors of 18.
Numbers whose only common factor is 1.
8,16
29 and 4147
this is hard
The GCF is 16.
12 and 20
4 and 9
28 and 56
5,65,7
The answer is: 3
The numbers are 5 and 10.
60
12 and 72 24 and 36