GRE数字大小比较题(详见补充)The number of different duos that can be formed from a group of 5 peopleThe number of different trios that can be formed from a group of 5 people这两个数答案给的是一样大?为什么?

GRE数字大小比较题(详见补充)The number of different duos that can be formed from a group of 5 peopleThe number of different trios that can be formed from a group of 5 people这两个数答案给的是一样大?为什么? 有关向量,详见补充 南开14级化学26题,详见补充,请解析, 正弦余弦大小比较一道题补充图片 一道高一数学题对数log2,详见补充已知log2[log1/2(log2^x)]=log3[log1/3(log3^y)]=log5[log1/5(log5^z)]=0,试比较x,y,z的大小? GRE数学题（详见补充）A survey of 100 persons revealed that 72 of them had eaten at restaurant P and that 52 of them had eaten at restaurant Q.Which of the following could not be the number of persons in the surveyed group who had eaten at bo 高中数学,比较数的大小补充图片 求教GRE数学：twice the square of x equals 5 more than the product of 3 and x 问：比较x和1的大小 GRE数学题1题.3（r/3+s/4+5/3）与r-s+5比较大小2题.The sum of 2 and the number of edges of a cube与The sum of the number of vertices of a cube and the number of faces of a cube大小3题.The number of walking steps,each of length 0.4 meter, gre数学,比较大小题目中,为什么会有C、D的答案呢?GRE数学题,比较大小只有两个选项,D是不是说明无法比较呢? GRE数学题1x and y are number on the number line.比较x与y大小求翻译与解法 英语阅读理解一道题：what is the price on the price tag（详见补充）短文是这片叫做VIII的文章34.what is the price on the price tag? a.$3.00 b.￥3.00 c.$10.00 d.￥10.00 高一数学求解17题,详见补充,求过程,谢谢 有解析,但看不懂!详见补充,Thanks! 高等数学求全微分（详见问题补充） 求一道有机化学题,详见补充 阅读理解B,详见补充问题, 阅读理解A,详见补充问题,