Question

college classes: how many students are taking math? how many students are taking science and history? how many students are taking math and science, but not history? question help: video message instructor submit question

Explanation:

Step1: Find students taking math

Sum all parts in the math circle: \(6 + 5+1 + 9\).

$$6 + 5+1 + 9=21$$

Step2: Find students taking science and history

Look at the intersection of science and history: \(7+1 = 8\).

Step3: Find students taking math and science but not history

Look at the intersection of math and science not in history: \(9\).

Answer:

How many students are taking math? \(21\)
How many students are taking science and history? \(8\)
How many students are taking math and science, but not history? \(9\)