An urn contains 4 balls. two balls are drawn at random from the urn (without replacement) and are found to be white. what is the probability that all the four balls in the urn are white
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Probability = number of observations ÷ Total number of observations
Probability that the all will be white = 4÷4=1.
Probability that the all will be white = 4÷4=1.
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