The HCF and LCM of two numbers are 11 and 385 respectively.  If one number lies between 40 and 70, then find that number.

55 66 44 59

55

HCF × Product of other factors = LCM 11 × (a × b) = 385 a × b = 35 Possibilities of a × b = 5 × 7 ∴ Required numbers is: 5 × 11 = 55