ICSE Class 8 Answered

Converting 0.48, 0.72 and 0.108 into like decimals, we get

0.480, 0.720 and 0.108

Now, expressing these numbers without decimals as the product of primes, 

Now, HCF of 480, 720 and 108 = 2² x 3 = 12

Thus, HCF of 0.48, 0.72 and 0.108 = 0.012 (taking 3 decimal places)

LCM of 480, 720 and 108 = 2⁵ x 3³ x 5 = 4320

Thus, LCM of 0.48, 0.72 and 0.108 = 4.32 (taking 3 decimal places)