the probability that the 13th day of a randomly chosen month is a friday?
vasavya b , 16 Years ago
Grade
Algebra> probability...
4 AnswersChetan Mandayam Nayakar
any randomly chosen day has the same probability, namely 1/7 of being any day of the week from monday to sunday. therefore the answer is 1/7.
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Uddesh Nath
Probability of choosing any month out of 12 month =1/12 Probability that the 13th day is Friday if the 1st day say starts with Sunday =1/7 Thus required probability =1/12×1/7 =1/84
srikanth goud
probability of selecting month = 1/12 and probability of selecting friday = 1/7.so,required probability = 1/12 x 1/7 = 1/84
You know who
There are 12 months and 7days so permutations can be 12*7=84 . Therefore the probability of getting a Friday will be 1/84
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