If the product of three consecutive numbers is 120, then the sum of those numbers is-

Explanation

Let, the three consecutive numbers be a, (a + 1), (a + 2). $\because$ a (a + 1) (a + 2) = 120 $\because$ 4 $\times$ 5 $\times$ 6 = 120 $\therefore$ The sum of numbers = 4 + 5 + 6 = 15