If the HCF of 60 and 168 is 12, what is their LCM?
480
240
840
420
We know, the product of two given numbers = product of their HCF and LCM 60 × 168 = 12 × LCM LCM=60×16812 = 840
The LCM of the two numbers is 9 times their HCF. The sum of LCM and HCF is 500. Find their HCF.