单选题If one title is selected at random out of the total inventory, the chance that the title is available in print in both paperback and hardcover is ______.A 5 out of 30B 7 out of 30C 18 out of 30D 23 out of 30
题目
单选题
If one title is selected at random out of the total inventory, the chance that the title is available in print in both paperback and hardcover is ______.
A
5 out of 30
B
7 out of 30
C
18 out of 30
D
23 out of 30