The scores of two tests have a bivariate normal distribution

The scores of two tests have a bivariate normal distribution with the following parameters:
1= 65; 1²= 16; 2= 80; 2²=25; and 12 = 0.8
If a student receives a score of 79 on the first test, what is the probability that he made exactly 79 on the second test?

Solution

Sin bivariate normal is continuous then taking exactly particular point from its domain is zero, whatever be the parameters of it.