Answer to Question #38380 in Discrete Mathematics for Naveed

Question

A trade development board organized coventions abroad for its 150 members in the jewelers industry. The coventions fell under three categories trading, manufacturing and design 52 attended the trading category, 46 the manufacturing and 32 the design; 20 attended the trading and manufacturing category and 18 the trading and design; 8 attended the manufacturing and design but not the trading category and 14 attended the trading and manufacturing but not the design category. draw a venn diagram to illlustrate the above information and find the number of members who attended
i. none of the convention
ii. at least two categories of the coventions
iii. akk the three categories of the conventions.