Answer:
There are 369 students who enrolled in either calculus or discrete mathematics.
Step-by-step explanation:
I'll create a Venn diagram to illustrate these figures.
Let’s define:
A represents the count of students who completed calculus.
B stands for those who took discrete mathematics.
We have the following:

Here, a denotes the students who studied calculus exclusively, while
represents those who took both subjects.
Using the same reasoning:

There are 188 students taking both calculus and discrete mathematics.
This implies that 
A total of 212 students studied discrete mathematics.
<pBased on this,

345 students have attended a calculus course.
<pSo, from this information,

We find the total number of students who took either calculus or discrete mathematics.

A total of 369 students participated in either calculus or discrete mathematics.