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a tricky one

7 people (A,B,C,D,E,F,G) participate in a competition, assume no two people get same spot, what's the probability A is before E? (don't think too hard...
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agree, 1/2,

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I am so sorry! yes, P=1/2
Robert之家-----我的家园

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I asked the probability. but you got it right with the total number. P is 1/2.

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(P7,7)/2
Robert之家-----我的家园

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