The inverse ratio of 9: 2: 1 is?\nOptions:\n(A) 1:9:18\n(B) 2:9:18\n(C) 2:7:18\n(D) 2:13:18\n(E) 2:9:15 Now, let's think a bit. Some random thoughts:
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1/9: 1/2: 1/1 = 2:9:18
The final answer: (B).
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