Given the sets and , what is the sum of all the elements in ?
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Given the sets and , what is the sum of all the elements in ?
Details and assumptions
You may first choose to read the summary page on Set Notation.
A survey of students found that of them are wearing red and of them are wearing green. Furthermore, of them are wearing neither red nor green. What is the number of students who are wearing red, green, or red and green?
If
what is
Given the sets if what is the value of