Given,6 white tennis balls and 3 red tennis balls in a close box. EVENT:drawing 2 balls of the same color. 1:find probability of drawing 2 balls of the same color? 2:find minimum number of draws without replaced to obtain 2 balls of the same color? Solution a) 6C2/9C2 + 3C2/9C2 =15/36 +3/36 =1/2.