Probability is the number of possible outcome divided by the total number of outcomes. It is a ratio. Mathematically, the probability Pr of an event "a" happening given tat the total number of outcomes is T
Pr = a/T
Total number of students
= 11 + 12
= 23
The probability of picking a
Girl = 12/23
Boy = 11/23
The probability of picking a girl and a boy (without replacement)
