ritasardinha1 ritasardinha1

27-11-2022
Mathematics

contestada

Num inquérito realizado a 100 pessoas, sobre se têm cães (C) ou gatos (G), 60
referiram ter cães e 52 disseram ter gatos. Escolhida uma pessoa das inquiridas
ao acaso, qual é a probabilidade de :
1.1. Não ter cães?
1.2. Ter cães e gatos?
1.3. Ter cães e não ter gatos?
1.4. Só ter cães ou só ter gatos?

Respuesta :

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