what is the hcf of 5.2 ,13 ,39 , my ans is 1.3 but somewhere ans is given 2.6

First, convert decimals into fractions 52/10, 13, 39 Now, HCF of fractions is given by, H.C.F of numerators / L.C.M of denominators H.C.F of numerators = 13; L.C.M of denominators=10 Hence, H.C.F of numerators / L.C.M of denominators = 13/10 =1.3 Hence, 1.3 is the correct answer.