2.Apply the Formula: The formula for the number of ways to select one or more objects from groups of identical objects is given by: (P+1)(Q+1)(R+1)−1 Here, the "+1" accounts for the option of selecting none of the balls of that color, and we subtract 1 at the end to ex...
Assuming the balls to be identical except for difference in colours , the number of ways in which one or more balls be selected from 10 white , 9 green and 7