Question

A bag contains balls of five different colours. Two are red, three are blue, ten are white, four are green and three are black. Balls are taken from the bag without looking, and not returned. What is the smallest number of balls that should be taken from the bag to be sure that two balls of the same colour have been taken? 2013

          A bag contains balls of five different colours. Two are red, three are
blue, ten are white, four are green and three are black. Balls are
taken from the bag without looking, and not returned. What is the
smallest number of balls that should be taken from the bag to be
sure that two balls of the same colour have been taken? 2013

A bag contains balls of five different colours. Two are red, three are
blue, ten are white, four are green and three are black. Balls are
taken from the bag without looking, and not returned. What is the
smallest number of balls that should be taken from the bag to be
sure that two balls of the same colour have been taken? 2013

Added by Rosario W.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Jen H

Step 1

So, we need to consider the worst-case scenario, which is that we pick one ball of each color before getting a duplicate. In the worst-case scenario, we would pick one red ball, one blue ball, one white ball, one green ball, and one black ball. This means we have Show more…

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A bag contains balls of five different colours Two are red; three are blue, ten are white, four are green and three are black. Balls are taken from the bag without looking; and not returned . What is the smallest number of balls that should be taken from the bag to be sure that two balls of the same colour have been taken? 2013