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Mathematics, 21.04.2020 01:46 hschuman01osrzvf

A television poll of 151 persons found that 68 watched Law and Disorder; 61 watched Twenty-five; 52 watched The Tenors; 16 watched both Law and Disorder and Twenty-five; 25 watched both Law and Disorder and The Tenors; 19 watched both Twenty-five and The Tenors; and 26 watched none of these shows. How many persons watched all three shows?

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