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((12 choose 7)+(12 choose 8)+(12 choose 9)+(12 choose 10)+(12 choose 11) +(12 choose 12))(1/2)^(12)
((12 choose 7)+(12 choose 8)+(12 choose 9)+(12 choose 10)+(12 choose 11) +(12 choose 12))(1/2)^(12)
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