an
1188
(1) 405 and 4520
Using prime factorisation, find the HCF and LCM of
(i) 144, 198
(i) 396, 1080 (iii) 1152, 1664
ITsing nrime factorisation, find the HCF and LCM of
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(i) 144, 198
Prime factorisation:
144 = 2^4 × 3^2
198 = 2 × 3^2 × 11
LCM = 2^4 × 3^2 × 11
= 1584
(ii) 396, 1080
Prime factorisation:
396 = 2^2 × 3^2 × 11
1080 = 2^3 × 3^3 × 5
LCM = 2^3 × 3^3 × 5 ×11
= 11880
(iii) 1152 , 1664
Prime factorisation:
1152 = 2^7 × 3^2
1664 = 2^7 × 13
LCM = 2^7 × 3^2 × 13
= 14976
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