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Model Papers
In a village of 50 people, 20 people have their fast on 2nd october. Two persons are selected at random out of them. Write the probability distribution for selected persond who are on fast. Also, find the mean of the distribution.
cbse
class12
modelpaper
2012
sec-b
q22
math
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asked
Jan 28, 2013
by
thanvigandhi_1
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A biased die is twice as likely to shown an even number as an odd number. The die is rolled three times. If occurance of an even number is considered a success, then write the probability distribution of number of successes. Also find the mean number of successes.
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