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班级的六一联欢会上,小明按照 3 个黄气球,2 个红气球,4 个绿气球的顺序把气球串起来装饰教室,共用了 62 个气球,第 62 个气球是_____颜色,这种颜色的气球小明至少要买_____个才够用.

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答案: 绿 ;27
本题解析:

62÷(3+2+4)=6(组)……8(个)

所以,第 62 个气球和第 8 个一样,为绿色.

8﹣3﹣2=3(个)

绿气球共有 6 个循环加 3 个.

4×6+3 =24+3 =27(个)

答:第 62 个气球是绿颜色,这种颜色的气球小明至少要买 27 个才够用.

故答案为:绿;27.

更新时间:2022-04-04 09:28

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