一道PS

joywzy

15. 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
答案

谢谢!

linda2003

此题主要考147，000的质因子分解，但无需将其全部分解开，只需考虑其含有几个7即可。此题共有2个，则代表了有两个红色beads，选D

joywzy

一语中的!非常感谢!