18 and 36 do.
So do 18 and 54, 36 and 54, 18 and 72, 54 and 72, and
an infinite number of other pairs of numbers.
Chat with our AI personalities
6 and 36 12 and 18
LCM is Least Common Multiple of 2 or more numbers. So, LCM of 1 number i.e. 18 is not defined. Similarly, HCF is Highest Common Factor of 2 or more numbers. So, HCF of 1 number i.e. 3 is not defined.
2
The HCF of both numbers is 1
The GCF is 2.