Question
Find the difference between sum of digits of LCM and
HCF of 20, 50 and 100.Solution
20 = 2² × 5 50 = 2 × 5² And 100 = 2² × 5² So, HCF = 2 × 5 = 10 So, sum of digits of HCF = 1 + 0 = 1 And LCM = 2² × 5² = 100 And sum of digits of LCM = 1 + 0 + 0 = 1 So, required difference = 1 - 1 = 0 Hence, option a.
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