Find the HCF of `612` and `1314` using prime factorisation.

Find the HCF and LCM of 126 and 156 using prime factorisation method.

The HCF of 65 and 117 is expressible in the form 65m-117 . Find the value of m. also find the LCM of 65 and 117 using prime factorisation method.

Find the HCF and the LCM of 72 and 120, using prime factorisation method.

Find the HCF of 315 and 1275 by prime factorisation method. Then, find their LCM

Find the HCF of 96 and 404 by prime factorisation method. Hence, find their LCM.

Find the HCF of 96 and 404 by prime factorisation method.Hence,find their LCM.

Find the HCF of 525 and 1120 by the prime factorisation method. Then, find their LCM using the relation formula.

Find the HCF of 1008 and 1080 by prime factorisation method.