Question
Find the difference between sum of digits of LCM and
HCF of 32, 48 and 80.Solution
32 = 2⁵ 48 = 2⁴ × 3 And 80 = 2⁴ × 5 So, HCF = 2⁴ = 16 So, sum of digits of HCF = 1 + 6 = 7 And LCM = 2⁵ × 3 × 5 = 480 And sum of digits of LCM = 4 + 8 + 0 = 12 So, required difference = 12 - 7 = 5 Hence, option c.
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