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In [2]: ((3 / 4) * (3 / 7)) / ((3 / 4) * (3 / 7) + ((1 / 3) * (4/7)))
((3 / 4) * (3 / 7)) / ((3 / 4) * (3 / 7) + ((1 / 3) * (4/7)))
Out[2]: 0.627906976744186
0.627906976744186
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