The outermost player passes the ball layer by layer to the inner player. There are four players on the first layer, three on the second layer and four on the third one. How many kinds of passing methods are possible?
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数学PS
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The outermost player passes the ball layer by layer to the inner player. There are four players on the first layer, three on the second layer and four on the third one. How many kinds of passing methods are possible?
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正确答案: D