What is the probability of 5 Sunday in the month of October?

a)3/7
b)1/7
c)2/7
d)3/5

1 Answer
VSH
Apr 7, 2018

3/7

Explanation:

October has 31 days. First 28 days will have 4 Sundays. Now the the last 3 days could be any of the 7 remaining days of the week. If 29th day is either friday, saturday or sunday then there will be 5 sundays in the month, otherwise it will stay 4.

P(5 Sundays) = P(29th day is Fri/Sat/Sun)= #3/7#

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