Use prime factorisation find HCF of
66 and 330
66 and 330Prime factors of 66=2,3,and 11Prime factors of 330 = 2 × 3 × 5 × 11∴ Common factors 2,3 and 11∴ H.C.F. of 66 and 330 is 66
Using prime factorisation, find the HCF and LCM of :
(i) 8, 9, 25 (ii) 12, 15, 21 (iii) 17, 23, 29
(iv) 24, 36, 40 (v) 30, 72, 432 (vi) 21, 28, 36, 45
Find the HCF using prime factorisation method .
224 , 308 and 330
5500 and 7700
using prime factorisation find the lcm&hcf of 21,28,36,45
Using prime factorisation method, find HCF nad LCM of 36 and 120.