问og12-217题 的中文意思

zzqqyy87517

217. 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 point values of the removed beads is 147,000, how many red beads were removed?

A.  5
B.  4
C.  3
D.  2
E.  0

carlotta

一个容器里装了红黄绿蓝珠子，分别价值7，5，3，2分。从容器中取出一些珠子，如果取出的珠子的数值的乘积为147000，问取出多少红珠子？
把147000因式分解。147000=2*2*5*5*7*7*3.
所以红珠子2个