Circle A, B and C represents singers, dancers and actors respectively. The total number of these are 50, 60 and 40 respectively. What is the number of people who are both singers and dancers but are not actors?

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Circle A represents singers: Total number of singers = 50.
Circle B represents dancers: Total number of dancers = 60.
Circle C represents actors: Total number of actors = 40.

As per the Venn diagram, There are 15  number of people who are both singers and dancers but are not actors.

Thus, the correct option is (d) 15