2 and 12
None. But 4 and 6 have a LCM (not LMC) of 12 and HCF of 2.
2 and 12
The GCF is 1.
2 and 12
The HCF of both numbers is 2
The HCF of the numbers 18 and 40 is 2.
To have a HCF, you need at least 2 numbers. There is no HCF in just 1 number.
You cannot. The numbers 2 and 12 have hcf = 2 and LCM = 12 The numbers 4 and 6 also have hcf = 2 and LCM = 12 So if you just knew the hcf and LCM you would not know which of the two was the required pair.
The GCF of consecutive even numbers is 2.
The GCF is 2.
2 and 12
None. But 4 and 6 have a LCM (not LMC) of 12 and HCF of 2.
2 and 20
2 and 12
2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.
HCF of 20 means the two numbers have common prime factors of 2, 2 and 5. However, LCM of 535 means that both of the numbers are odd. This cannot be the case if they have a prime factor of 2. Thus two numbers cannot have 20 as hcf and 535 as lcm.