Lucy is both the25th highest and the25th lowest in Class7.Ho
Lucy is both the25th highest and the25th lowest in Class7.How many students are there in Class7?
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25*2-1 = 49人
祝您在新的一年一帆风顺,二龙腾飞,三羊开泰,四季平安,五福临门,六六大顺,七星高照,八方来财,九九同心,十全十美.
祝您在新的一年一帆风顺,二龙腾飞,三羊开泰,四季平安,五福临门,六六大顺,七星高照,八方来财,九九同心,十全十美.
1年前
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你能帮帮他们吗