Question

a bag has 6 bag balls, 8 red balls, 5 black balls and 9 white balls. you are asked to pick some balls from the bag without looking into the bag what is the minimum number of balls you must pick so as to be sure that at least 3 of them are of the same color ​

Answer 1

You need to pick up atleast 9 Balls.

Suppose u pick only 8 balls in the worst case u would have picked up 2 balls of each color that sums up to 8 and now when u will pick the 9th ball u can be sure that yes u have got 3 balls of a set of color.

Answer 2

14 because total balls=6+8+5+9=28 balls