Basic Probability

1. What is the probability of spinning green?

• $\frac{3}{10}$
  

• $3:12$

• $\frac{1}{4}$

• $0.3$

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• $\frac{24}{144}$

• $\frac{10}{12}$

• $\frac{2}{12}$

• $\frac{10}{144}$

The chart represents the number of marbles in a jar.

P(green) =

• $\frac{10}{28}$

• $\frac{5}{38}$

• $\frac{5}{14}$

• $\frac{5}{19}$

Joe picks a button at random from the bag. What is the probability it is not red or it is black?

•  $\frac{4}{7}$  

•  $\frac{2}{7}$  

•  $\frac{5}{7}$  

•  $\frac{3}{7}$  

Joe picks a button at random from the bag. Find p(yellow or black).

• $5$
  

• $\frac{5}{24}$

• $\frac{5}{12}$

• $5\%$

Joe randomly selects a button from the bag. What is the probability it is not blue?

• $4\%$

• $0.4$

• $4:10$

• $4$

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of choosing a consonant?

• $\frac{2}{7}$

• $\frac{3}{7}$

• $\frac{4}{7}$

• $\frac{5}{7}$

What is the probability of spinning at least a 5?

• $\frac{8}{13}$

• $\frac{7}{12}$

• $\frac{7}{13}$

• $\frac{8}{12}$

What is the probability of spinning an even number?

• $\frac{1}{2}$

• $\frac{3}{10}$

• $\frac{4}{8}$

• $\frac{3}{8}$

What is the probability of spinning a prime number?

• $\frac{3}{4}$

• $\frac{7}{8}$

• $\frac{4}{5}$

• $\frac{3}{5}$