What is the probability that someone would be born at 12:34 on 3/4/5?

Question

Both are sets of lexical numbers.

Looking for the probability of being born
a) At a time & date where both numbers are lexically increasing sets. (E.g. 12:34 p.m. on 3rd April 2005 ... 12:34 @ 3/4/5).
This is similar to being born at 1:23 a.m. on 2nd March 2004 and so on....

Answer 1

Assumption: The question is for calculating the probability that someone would be born in all such times.
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Assuming that people are born with equal probability on every minute, the answer to this question can be equivalent to how probable is this kind of time.

Lets consider the time first (granularity of one minute) .. total minutes = 60X24 = 1440

for hours to end with (1 - 01):
we have 2, 3, 4 , 5, 23 to 29 (7 cases), 34 to 39, 45 to 49, 56 to 59 => total 26 cases

for hours to end with (2 - 02, 12)
similarly 18 cases x 2 => 36 cases.

for hourse to end with 3 (03, 13, 23)
similarly 11 cases x3 => 33 cases.

total probability in a given day = (26+36+33)/1440

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Calculating days is a bit more tedious but similar. Only thing is that you have fix up on the number of years you are dealing with... For given domain set of 9 digited yearing (000000000 to 999999999) we can find a definitive probability and also this is circular..

Until I find a smarter way than calculating for each day of month (which, if you are desperate, is not so tedious as it may seem) I am not going to attempt it :) ...

hope this helps

Answer 2

If minutes are your granularity, the probablity of being born that minute are about as good as any other. However, I'll bet that the probability for a birth on few minutes like that is going to be higher than most minutes because of fudging.


My quick estimate is that approximately 190 people are born every minute worldwide. My guess due to fudging is that something around 600 people will have that time recorded as a birth. That makes it a 1 in 10 million shot. It ought to be one in 30 Million.

My guess is that, if we add up all of the "cool date and times", we are down to one in a few tens of thousand.

Answer 3

i'd prefer 12:34pm on 5/6/07

rather than 12:34 3/4/05

Answer 4

you cannot calculate this because you did not have the limit
you must have gave the age so that the year can be fixed
or you should have given the some another constant

in this condition you have to start from the time when the humanity started till the current time

Answer 5

I think it's the smae probabilty of being born any time on any other date

Answer 6

Equal to any other possibility. This does not mean your daughter is not special; she is, but not because of your birth moment.