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The following table shows the distribution of grades on a mathematics exam:
Grades Number of Students
0-59 7
60-69 12
70-79 26
80-89 14
90-100 8
Which of the following quantities can be determined from this distribution? If the quantity can be determined, find it
- The number of students who took the test.
- The number of students who scored below 70.
- The number of students who scored below 75.
- The number of students who scored between 69 and 90.
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