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Probability to get odd numbers twice

Forums: Dice
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Sklipnott
 
Reply Thu 8 Jun, 2017 09:06 am
How to calculate the probability a die will come up with odd numbers twice, after rolling it 12 times?
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Type: Discussion • Score: 0 • Views: 640 • Replies: 1
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markr
 
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Reply Sat 15 Aug, 2020 08:12 pm
@Sklipnott,
Assuming you mean exactly twice with a die that has half of its sides odd, C(12,2)/2^12, where C(n,r) = n! / (r! * (n-r)!). So, that's 66/4096 or 33/2048.
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