ANSWER :
7/12 or 7 is to 12
EXPLANATION :
From the problem, the probability of an event is 7/19
Note that the probability of the event that will occur and the probability of the event that will not occur have a sum of 1.
Calculate the probability of the event that will not occur.
That will be :
The odds of an event is defined as the quotient between the event that will occur and the event that will not occur.
That will be :
The answer is 7/12 or 7 is to 12