1) The H.C.F. of 2/3, 8/9, 64/81 and 10/27 is : A) 2/3 B) 2/81 C) 160/3 D) 160/81 Answer: Option BExplanation:Given fractions are 2/3 , 8/9 , 64/81 , 10/27The HCF of a fractional number= HCF of numerators/ LCM of denominators.So, HCF of 2, 8, 64, 10 /LCM of 3, 9, 81, 27 = 2/81