No, 2 and 10 are factors of 20. The LCM of 2 and 10 is 10.
HCF of 3 means the numbers both have a prime factor of 3. LCM of 12 means that, between the numbers, there are factors of 2, 2 and 3. But these 2s cannot be shared, else the HCF would be greater. Therefore, the numbers will need to be 3 and 2x2x3, or 12.
1, 2.
30 & 1. 15 & 2. 10 & 3.
The greatest common factor of the numbers '420' and '2646' is '42'.
2 and 20
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.
The answer is 4 and 10.
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.
No, 2 and 10 are factors of 20. The LCM of 2 and 10 is 10.
HCF of 17 and 68 is 17 ..( Lowest Prime factor ) LCM Of 102 and 476 is 7*2^2*3*17 which is 1428 .. ==> Sum of HCF and LCM are 1428+17= 1445 .
2 and 12
2 and 12
6 and 10 2x3=6 2x5=10 HCF=2 LCM=30
2 and 12
3 and 30.
77 and 1