Sets 3

1 mark · Easy

Let S = {students who play a musical instrument}, U = {all students in class}. Write, in set notation, the set of students who do not play a musical instrument.

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S′ or U \ S or the complement of S

Must show: S′ or U \ S

Also accept: S′; U \ S; the complement of S

Common mistakes: S alone; U

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Marking points

A1 · 1 mark · Writes S′, U \ S, or explicitly 'the complement of S'.

Worked solution

The set of students who do not play a musical instrument is S′ or U \ S.