Topic : Probability-by Counting
from: category_eng
1.
use the number of #1 to #10.

2.


3.


4.


5.


6.
The probability is 2/3

1. A
use the number of #1 to #10.
2.
3. B
4. (w+3)/(w+m+5)
5. d
6. A
The probability is 2/3