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In each of these questions two quantities A and B are given. Compare the two quantities
There are 28 students in a class : all born in 1990.
A. The probability that all their birthdays are in February.
B. The probability that all their birthdays fall on a Friday.
There are 28 students in a class : all born in 1990.
The probability that all their birthdays are in February. = 1/12
The probability that all their birthdays fall on a Friday. = 1/7
The chances that all will be born on a particular day of the week is thus higher than the chances of them all being born in the same month.
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