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Mathematics, 23.04.2021 16:10 EllaSue
Foi realizada uma pesquisa com 350 pessoas para avaliar a eficácia de um anúncio na divulgação de dois produtos novos, A e B. Ao final da pesquisa, constatou-se que, dos entrevistados, precisamente: 280 conheciam o produto A; 80 conheciam os dois produtos; 20 não conheciam nenhum dos dois produtos. De acordo com esses dados, quantas pessoas entrevistadas conheciam apenas o produto B
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Foi realizada uma pesquisa com 350 pessoas para avaliar a eficácia de um anúncio na divulgação de do...
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