Problema Solution
A bag has 6 blue 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 atleast 3 of them are of the same colour?
Answer provided by our tutors
A minimum of 9 balls must be extracted to be sure we have extracted at least two balls with the same color.