Math Problem Statement
uma empresa de laticinios está promovendo uma campanha onde os clientes podem ganhar um premio se retirarem uma bolinha branca de cada uma das urnas A e B. A urna a tem 5 bolinhas brancas entre um total de 20 b0linhas, e a urna b tem 3 bolinhas brancas. a empresa deseja diminuir a chance de ganhar o premio para 4% ou menos. quantas bolinhas coloridas precisam ser adicionadas á urna B para que a probabilidade de retirar uma bola branca de ambas as urnas seja 4% ou menos?
Solution
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Math Problem Analysis
Mathematical Concepts
Probability
Independent Events
Conditional Probability
Formulas
Probability of independent events: P(A and B) = P(A) * P(B)
Theorems
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Suitable Grade Level
Advanced High School
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