Discrete Math Quiz
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COUNTING AND COMBINATORICS
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A tech conference tracks attendee participation in three types of sessions: Technical Workshops (T), Business Panels (B), and Networking Events (N). With 500 total attendees, the data shows: 300 attended technical workshops, 250 attended business panels, 200 attended networking events, 140 attended both workshops and panels, 120 attended both workshops and networking events, 100 attended both panels and networking events, and 70 attended all three types of sessions. Conference organizers want to send a follow-up survey to attendees who participated in networking events but did not attend technical workshops. How many attendees should receive this survey?
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