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24.09.2020 • 
Mathematics

A survey of magazine subscribers placed 59 celebrities in 3 categories. 35 were on the most powerful list. 26 were on the most liked list. 20 were on the most intelligent list. 3 were on all three lists. 13 were on the most powerful and most liked lists. 10 were on the most powerful and most intelligent lists. 7 were on the most liked and most intelligent lists. How many were only on the most intelligent ?list? How many were on none of the? lists?

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