2 نقطة (نقاط) السؤال 8 ?How many ways can first and second place be awarded to 9 racers

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answerhappygod
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2 نقطة (نقاط) السؤال 8 ?How many ways can first and second place be awarded to 9 racers

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2 نقطة (نقاط) السؤال 8 ?How many ways can first and second place be awarded to 9 racers
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