**Week 31~Tuesday

A jar contains 3 blue marbles, 6 red marbles, 1 green marble, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then another marble is chosen at random. Find the probability of the first marble being red and the second marble being green.

• 1/2 = 50%

• 7/12 = 58.3%

• 1/24 = 4.2%

• 7/144 = 4.9%

A number cube with the numbers 1 through 6 is rolled, and a spinner with the colors red, green, blue, and orange was spun. What is the probability of the number cube showing a 4 and the spinner landing on the color green?

• 1/36 = 2.8%

• 1/24 = 4.2%

• 1/12 = 8.3%

• 1/20 = 5%

Looking at the image, if you doubled the length of the radius, what would be the ratio of the area of the smaller circle to the larger circle?

• 1:4

• 64:16

• 4:1

• 8:16

Find the mean of the set of data.

2, 4, 4, 6, 8

• 4

• 4.8

• 4.5

• 6

 Fill in the Blank

2.5 gallons = _______ cups

• 10

• 0.16

• 6.4

• 40

At a currency exchange, 3 U.S. dollars can be exchanged for 5 Japanese Yin. How many U.S. dollars will you receive for 1 Japanese Yin?

• 0.60

• 1.67

• 5/3

• 2