GRE
$$R$$
$$10$$
The fraction of the cookies in the full jar that were not eaten by either Jerry or Cantin
$$\frac{19}{30}$$
$$t$$
$$38$$
The number of permutations in which all the vowels are next to each other
The number of permutations in which all the consonants are next to each other
25000 +道题目
269本备考书籍