4500000
(9999+9997+.+9001)-(1+3+.+999)=?
2个回答
相关问题
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(9999+9997+.+9001)-(1+3+.+999)
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(9999+9997+···+9001)—(1+3+5+····+999)=?
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1+3+5+7+.+99=( ) 1+3+5+7+.+997+999=( ) 1+3+5+7+.+9997+9999(
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9999+9998+9997+9996+4+3+2+1=
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9999+9998+9997+9996.
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10000-9999+9998-9997.6-5+4-3+2-1=?
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10000-9999+9998-9997+9996-9995..+6-5+4-3+2-1等于多少?
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1991+1993+1995+1997+……+9991+9993+9995+9997+9999=?
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9+99+999+9999+9999+99999=?
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9+99+999+9999+99999+1=?