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2Â桧1-0.3*0.3=0.91
3Â桧1-0.3*0.3*0.3=0.973
4Â桧1-0.3*0.3*0.3*0.3=0.9919
5Â桧1-0.3*0.3*0.3*0.3*0.3=0.99757
6Â桧1-0.3*0.3*0.3*0.3*0.3*0.3=0.999271
7Â桧1-0.3*0.3*0.3*0.3*0.3*0.3*0.3=0.9997813
8Â桧1-0.3*0.3*0.3*0.3*0.3*0.3*0.3*0.3=0.99993439
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