Senin, 25 Juni 2012

011 - 015


No 011 – 015 please read the following text:

          A bowl contains 20 ball, of which 9 are red, 8 are white, and 3 are blue. Six balls are taken randomly and without replacement, find the probability that:

                011. Each of 6 balls is red

                012. Each of 5 balls is white

                013. There are 3 red, 2 white, 1 blue balls among the 6 balls selected.

                014. None of the 6 balls is blue

                015. There is at least 1 white and at least 1 blue balls among the 6 selected

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