List of top Quantitative Aptitude Questions on LCM and HCF

The HCF of two numbers is 12 and their LCM is 144. If one number is 36, the other number is:
The length and breadth of a rectangular field are 165m and 120m. If the field is to be paved with identical square tiles of maximum size, then the length of the side of the tiles is
The LCM of two numbers is 495 and their HCF is 5. If one of the numbers is 45, find the other number.
Five bells begin to ring together and ring respectively at intervals of 6, 5, 7, 10 and 12 seconds. How many times will they ring together in one hour excluding the one at the start?
Three persons start walking together and their steps measure 40 cm, 42 cm and 45 cm respectively. What is the minimum distance each should walk so that each can cover the same distance in complete steps?