At a dog show, there are 20 judges and 10 dogs in the final round

您还没有登录，登录以后才可以查看答疑和进行提问。

At a dog show, there are 20 judges and 10 dogs in the final round.

The number of distinct pairs of judges

The number of possible rankings of dogs from first to third place

答案：B

1
评分

1
浏览

老师能写一下这个题的步骤吗？我不确定自己的步骤是否正确

Quantitative Comparison
y>0Quantity A$$1+\frac{y}{1+y}$$Quantity B$$1+\fra......
Sentence Equivalence
Explorers could not build each other’s knowledge......
Sentence Equivalence
A cure for the common cold has been so elusive tha......
Sentence Equivalence
Although scientific progress leads to constant rev......
Text Completion
Just as the authors’ book on eels is often a key......
Reading Comprehension
The passage supplies information to suggest that i......
Reading Comprehension
According to the passage, starry flounder differ f......
Problem Solving
Joan bought a calculator at a discounted price tha......