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In a dark room there are 27 red balls,30 white balls and 15 blue balls.what is the minimum number of balls of 3 balls of same colour |
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Answer» Answer: if you mean what is he minimum number of balls you have to pick to be sure of having 3 balls of the same colour your answer is 7 Step-by-step explanation: If you want to say 3 balls it will be wrong because it is possible to pick all different colours and have only 1 of each colour, but we want 3 of he same colour IFyou keep dealing with worst CASE scenario you wont ge 3 of the same colour until you pick 7 lets even try 6 1st pick = red ball 2nd pick = blue ball 3rd pick = WHITE ball 4th pick = red ball 5th pick = blue ball 6th pick = white ball we still have just two of every colour but if we picked a 7H colour it will either be red,blue or white because those are the only colours available bu no mater what we are sure of at LEAST THREE of whatever colour we pick
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