Question
Find the difference between sum of digits of LCM and
HCF of 25, 50 and 75.Solution
25 = 5² 50 = 2 × 5² And 75 = 3 × 5² So, HCF = 5² = 25 So, sum of digits of HCF = 2 + 5 = 7 And LCM = 2 × 3 × 5² = 150 And sum of digits of LCM = 1 + 5 + 0 = 6 So, required difference = 7 - 6 = 1 Hence, option a.
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