So I have a question on probability. Let's say we have two variables that jointly follows bivariate normal distribution.

So I have a question on probability. Let's say we have two variables that jointly follows bivariate normal distribution. Variable G with mean 480 and SD 100 and variable C with mean 320 and SD 60, and the correlation between G and C is .6. What is P(G = 400)? I can do problems of normal distribution and bivariate normal however, I've never dealt with a situation where it asks me what is the probability something equals something, when dealing with normal distribution. So an explanation on how to do the problem would be helpful, thank you.