1 defective products were divided equally among a certain number of technicians. The number of left over defective products is equal to 2 less than the number of technicians. Then the following cannot be the number of technicians.
看不懂题呀
2. During a 640 mile trip, half were traveled on highway, the other half on city streets. What is the average speed for the entire trip?
a. Speed is given for the first half
b. Speed was also given for the other half
[确定]D
为什么不是C
3 五个字母 D I G I T ,可以组成一个string,如 DIGIT.两个II不相临,可以组成多少string?
怎么算作者: redli 时间: 2002-12-25 20:33