LCM of the given numbers.3 |9, 21, 25, 305 |3, 7, 25, 10 | 3, 7, 5, 2LCM = 3 × 5 × 3 × 7 × 5 × 2 = 3150By definition, LCM of a given set of numbers is their smallest common multiple. In other words, it is the smallest numbers which is divisible by all the given numbers.So, to get the answer , we have to deduct 5 from the LCM.3150 – 5 = 3145