ICSE Class 8 Answered

Converting 0.6, 1.5, 0.18 and 3.6 into like decimals, we get

0.60, 1.50, 0.18, 3.60

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

Now, HCF of 60, 150, 18 and 360 = 2 x 3 = 6

Thus, HCF of 0.6, 1.5, 0.18 and 3.6 = 0.06 (taking 2 decimal places)

LCM of 60, 150, 18 and 360 = 2³ x 3² x 5 = 1800

Thus, LCM of 0.6, 1.5, 0.18 and 3.6 = 18.00 (taking 2 decimal places)