想问一个数学题,有一组数,问能否确定range?
1. mean is given
2. standard deviation is given
解答:
点赞0
阅读264386
解答:
ken@boost.org.cn
提问:
If 500 is the mutiple of 100 that is closest to x and 400 is the multiple of 100 that is closest to y,which multiple of 100 is closest to x+y? (1)x小于500 (2)y小于400