Question

What are the LCM and HCF of the reciprocals of 18 and

• A. 72,6
• B. 1/72,1/6
• C. 1/6,1/72
• D. 1/6,1/4

Answer 1

Answer:

C. 1/6,1/72

As we know, LCM of fractions = LCM of all numerators/HCF of all denominators HCF of fractions = HCF of all numerators/LCM of all denominators Reciprocals of 18 and 24 are 1/18 and 1/24 respectively. LCM of 1/18 and 1/24 is = 1/6 [LCF of 1, 1 and HCF of 18, 24] HCF of 1/18 and 1/24 is = 1/72 [HCF of 1, 1 and LCM of 18, 24]