Probability 2 — Problem Solving & Data Analysis

Questions in this quiz (5)

1. There are $$m$$ mystery books and $$15$$ science books on a shelf. If one book is selected at random, what is the probability of selecting a mystery book, in terms of $$m$$?

   • $$\frac{m}{15}$$
   • $$\frac{15}{m+15}$$
   • $$\frac{15}{m}$$
   • $$\frac{m}{m+15}$$

2. Each face of a fair $$18$$-sided die is labeled with a number from $$1$$ through $$18$$, with a different number on each face. If the die is rolled one time, what is the probability of rolling a $$5$$?

   • $$\frac{1}{18}$$
   • $$\frac{5}{18}$$
   • $$\frac{13}{18}$$
   • $$\frac{17}{18}$$

3. A convenience store had $$120$$ customers on Wednesday. The table summarizes whether customers purchased a drink, a snack, both, or neither. Based on the table, what is the probability that a randomly selected customer did not purchase a drink?

   • $$\frac{11}{20}$$
   • $$\frac{1}{3}$$
   • $$\frac{9}{20}$$
   • $$\frac{11}{60}$$

4. A bag contains a total of $$80$$ marbles. A marble is to be chosen at random from the bag. If the probability that a red marble will be chosen is $$0.45$$, how many marbles in the bag are red?

   • $$52$$
   • $$177$$
   • $$36$$
   • $$123$$

5. Maya is creating a $$4$$ digit access code for her bike lock. Each digit can be any number from $$0$$ to $$9$$, and digits may repeat. How many different access codes can Maya create?

   • $$6,561$$
   • $$26,144$$
   • $$15,667$$
   • $$10,000$$