Mathematics
Mathematics, 05.05.2020 05:45, thruhdyjgrt

One hundred people are surveyed and asked if they trust candidate A or candidate B or candidate C in a local election. People are allowed to indicate more than one candidate and they are allowed to indicate no candidates. The results include the following:

34 people trust candidate A
44 people trust candidate B
48 people trust candidate C
7 people trust candidates both A and B
12 people trust candidates both A and C
17 people trust candidates both B and C
5 people trust candidates all three A and B and C

How many of the people surveyed trust NONE of the candidates?

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