SOLUTION: 3). Two balls are selected at random from a bag containing 4 white and 2 black balls. Find the probability that: i) Both are white.
ii) Both are of the same colour. iii) Both are
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-> SOLUTION: 3). Two balls are selected at random from a bag containing 4 white and 2 black balls. Find the probability that: i) Both are white.
ii) Both are of the same colour. iii) Both are
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Question 192707: 3). Two balls are selected at random from a bag containing 4 white and 2 black balls. Find the probability that: i) Both are white.
ii) Both are of the same colour. iii) Both are of the different Colour.? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 3). Two balls are selected at random from a bag containing 4 white and 2 black balls. Find the probability that:
i) Both are white.
P(both white) = 4C2/6c2) = 6/15 = 2/5
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ii) Both are of the same colour.
P(both white or both black) = P(both white) + P(both black)
= 2/5 + 2C2/6C2 = 2/5 + 1/15 = (6+1)/15 = 7/15
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iii) Both are of the different Colour.?
P(both white) + P(both black) + P(different color) = 1
P(different color = 1 - [P(both white) + P(both black)] = 1-7/15 = 8/15
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Cheers,
Stan H.
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