In a certain game,a large container is filled with red ,yell
In a certain game,a large container is filled with red ,yellow,green and blue beads worth,respectively,7,5,3 and 2 points each.A number of beads are then removed from the container .If the product of the points values of the removed beads is 147,000,how many red beads were removed?A 5B 4C 3D 2E 但是太快了看不懂能不能拆解一下啊,还有,product一般在题目里是两种意思吗?乘积和因子?
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容器里装着红,黄,绿,蓝色珠子,分别对应7,5,3,2分.从容器中移除珠子得到的分数是147000,求移走的红色珠子的次数.做法： 147000=7^a×5^b×3^c×2^d.求a. 其实就是把147000分解成很多因子,看看跟7的关系,用147000除7看能除多少次,很显然是2次.product 只是乘积 查看原帖>>
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1年前
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