QUESTĀO 2: Numa pesquisa sobre preferência entre dois refrigerantes, Coca-Cola e guaraná, obtivemos o seguinte resultado: 20 tomam guaraná, 15 tomam Coca-Cola 8 tomam os dois e 3 não tomam nenhum dos dois. Sorteando-se uma pessoa ao acaso, calcule a probabilidade de ela tomar guaçaná ou Coca-Cola? \( \begin{array}{llll}\text { a) } 5 / 6 & \text { b) } 5 / 12 & \text { c) } 2 / 5 & \text { d) } 9 / 10 \\ \text { e) } 7 / 30\end{array} \)

Ronaldo comprou 6 numeros de uma nfia sabendo que os 120 numeros da rifa foram vendidos, ance de Ronaldo ganhar a nfa?

Question A professor gives a surprise quiz with one multiple choice question. There are 4 answer possibilities: B, C, and D. What is the probability that you randomly guess and select the correct answer? Give your answer as a fraction.

Question A stack of cards contains six RED cards numbered \( 1,2,3,4,5,6 \), five BLUE cards numbered \( 1,2,3,4,5 \), and four GREEN cards numbered \( 1,2,3,4 \). If a single card is picked at random, what is the probability that the card has an ODD number? - Express your answer as a simplified Fraction Provide your answer below:

Question 2 A bag contains 4 red balls, 3 black balls, and 3 green balls. Two balls are randomly drawn from the bag one after the other with replacement. 2.1 Construct a tree diagram to represent all possible outcomes of drawing two balls in succession. Clearly label the branches with the corresponding probabilities.

1 Para crear una prueba, un profesor tiene un banco de 50 preguntas. Si de ellas escogerá 20. ¿de cuántas formas puede crear la prueba? \( =50 \) \( =20 \)