hat is the probability that at least two of the nine justices of the U.S. Supreme Court have the same birthday? (Use a 365-day year. Round your answer to four decimal places.)

Question

inkyvoyd · Answer

http://en.wikipedia.org/wiki/Birthday_problem#Calculating_the_probability

anonymous · Answer

sorry. that didn't help

aum · Answer

Try this: https://www.khanacademy.org/math/precalculus/prob_comb/prob_combinatorics_precalc/v/birthday-probability-problem

aum · Answer

Following the above link I am getting:

$\Huge 1 - \frac{365!}{(365-9)!~*~365^9}$

inkyvoyd · Answer

@amritc what are you having trouble with?

anonymous · Answer

how to plug in a formula

aum · Answer

I plugged the numbers into wolfram and got this: https://www.wolframalpha.com/input/?i=1+-+365!%2F%28356!*365^9%29

aum · Answer

0.0946 (rounded to 4 decimal places).

anonymous · Answer

thanks that was a great healp