The following diagram shows the number of people who play table tennis, Chess, Carrom and Ludo. If the total number of people is 600, then what is the number of people who play Chess and Ludo but not Carrom?
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When solving Venn diagram problems with 4 sets, focus strictly on the boundaries of the circles mentioned. Ignore the "Total Number" unless you are asked for a percentage or if a region's value is missing.