if 12 strangers are in a room w/t is the Prob that no two ofthem celebrate the b
ID: 2914120 • Letter: I
Question
if 12 strangers are in a room w/t is the Prob that no two ofthem celebrate the birthay in the same month? 12/12 + 11/12+ 10/12 ect is the prob that 12 people havebirthday on different monts. so how i calculate prob that NO 2 OFTHEM CELEBRATE BIRTHDAY IN THE SAME MONTH? when 1-P(E) is when 2 or at least 2 of them havebirthaday on the same month? if 12 strangers are in a room w/t is the Prob that no two ofthem celebrate the birthay in the same month? 12/12 + 11/12+ 10/12 ect is the prob that 12 people havebirthday on different monts. so how i calculate prob that NO 2 OFTHEM CELEBRATE BIRTHDAY IN THE SAME MONTH? when 1-P(E) is when 2 or at least 2 of them havebirthaday on the same month?Explanation / Answer
prob of no shared BD month is: (12/12)(11/12)(10/12)(9/12)(8/12)(7/12)(6/12)(5/12)(4/12)(3/12)(2/12)(1/12)= 12!/1212 = 0.00005 prob of shared BD month is: 1-0.00005 = 0.99995
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