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Gostaria de saber como resolve esta questão do Diagrama de Venn.
Os alunos de uma turma fizeram uma prova de 3 questões. Sabe-se que 4 alunos erraram todas as questões; 5 só acertaram a primeira questão; 6 só acertaram a segunda. Sete só acertaram a terceira; 9 acertaram a primeira e a segunda; 10 acertaram a primeira e a terceira; 7 acertaram a segunda e a terceira e 6 acertaram todas as questões. Determine o número de alunos dessa turma.
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Professores e Alunos
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