1. 最新联系题7,section2 20题图表题,能解释一下这个表是什么意思吗?没看懂~
2. sixty-eight people are sitting in 20 cars and each car contains at most 4 peopel. What is the maximum possible number of cars that could contain exactly 1 of the 68 people?
3. if 72.42=k(24+n/100),where k and n are positive integers and n<100,then k+n=?
4. 最新练习题7,section 4 16题是不是应该选D?第24题是算的?