List of top Mathematics Questions on LCM and HCF asked in CBSE Class X

Using prime factorisation, find the HCF of 144, 180 and 192.
Using prime factorisation, find the HCF of 180, 140 and 210.
Three friends plan to go for a morning walk. They step off together and their steps measures 48 cm, 52 cm and 56 cm respectively. What is the minimum distance each should walk so that each can cover the same distance in complete steps ten times?