[Maths] L'élite peut-elle résoudre de problème de logiques ?

A television poll of 151 persons found that 68 watched “Law and
Disorder”; 61 watched “The East Wing”; 52 watched “The Tenors”; 16
watched both “Law and Disorder” and “The East Wing”; 25 watched both
“Law and Disorder” and “The Tenors”; 19 watched both “The East Wing”
and “The Tenors” and 26 watched none of these shows. How many persons
watched all these shows? Explain your solution.

On écoute vos démonstrations l'élite

[Maths] L'élite peut-elle résoudre ce problème de logique ?**

On peut plus changer les titres des topics ???