Answers ( 2 )
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    The total of the cards are: 9+8+7+6+5+4+3+2+1=459+8+7+6+5+4+3+2+1=45

    The total of the cards that can removed 1 card is: (45−1)to(45−9)(45−1)to(45−9)

    From this operation and the question, we see only C.54C.54 satisfy these.

    So the answer is Cundefined

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    banhI don't know?undefined