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10 questions
30.34 - 25.75 = n
20.8 - 18.27 = n
42.9 - 32.83
35.07 - 26.4 = n
47.008 - 35.26 = n
60 - 35.2 = n
40 - 19.36 = n
80 - 50.009 = n
67.05 - 28.398 - n
90.08 - 89.294 = n
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