Answer:
2 students
Explanation:
See attached pic for complete question.
This is a very simple question.
Each "x" represents 1 student.
If we see the column for Tuesday, we can count there are 4 "x"s.
If we see the column for Wednesday, we can count there are 2 "x"s.
So 4 - 2 = 2 more students were born on Tuesday than on Wednesday [according to the graph]