M2: Basic Probability

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?

• 5/6
• 1/2
• 1/3
• 1/6

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

The chart below represents the number of marbles in a jar.
P(green) = 

• 5/19
• 10/28
• 5/14

Tags

CCSS.7.SP.C.5

What is the probability of selecting an orange candy?

• 0%
• 25%
• 50%
• 100%

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%
• 70%
• 100%
• 0%

A 6-sided die is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll?

• 2/3

• 5/36

• 1/9

• 1/36

A cookie jar has 3 dozen chocolate chip, 1 dozen peanut butter, and 2 dozen oatmeal raisin cookies. If Megan chooses a cookie, does not replace it, then chooses another, what is the probability that she chooses a peanut butter then a chocolate chip cookie? 

• 2/3
• 1/10
• 6/71
• 11/72

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

What is the probability of choosing an 8 from a deck of cards?

• 1/13

• 8/52

• 4/26

• 1/52

What is the probability of choosing a 4 or 5 from a deck of cards?

• 1/13

• 2/13

• 8/13

• 2/52

What is the probability of choosing a red card from a deck of cards?

• 1/13

• 1/52

• 1/2

• 1/4

Consider a game of drawing cards from a deck without replacing them back in the deck. How could you find the probability that you draw 4 aces in sequence?

• (1/52)⁴

• (1/13)⁴

• (1/13)*(3/51)*(1/25)*(1/49)

• (4*3*2*1)/52