Practise questions on HCF and LCM at jagranjosh.com. It is an important topic of Quantitative aptitude section and will aid you in your preparation of entrances such as CAT, CMAT, MAT, XAT, IIFT ...

Finding LCM and HCF from prime factors Sometimes you are given numbers expressed as a product of prime factors. For example, 8 = 2 3 and 90 = 2 × 3 2 × 5.