Multiplication and Addition Probability Rules

A jar contains 4 white chips, 5 purple chips, and 1 black chip. Chips are selected randomly one at a time, and are not replaced. 
What is P(purple then black)?

• 1/18
• 2/5
• 3/7
• 4/9

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

CCSS.HSS.CP.B.8

Jim picks a diamond out of a deck of cards, replaces it and gets a diamond again. What is the probability this happened. (There are 13 diamonds, and 52 cards in a deck)

• 1/16
• 2/13
• 4/17
• 1/21

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.8

A bag contains 5 red marbles and 4 pink marbles. A marble is randomly drawn and then replaced. What is the probability the first marble is pink and the second is red?

• 26.9%

• 24.7%

• 20.0%

• 5%

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.8

A day in the year is randomly chosen. Given the day is in the month of December, what is the probability the day is the 25^th? (December has 31 total days.)

• 8.5%

• 8.84%

• 80.6%

• 3.2%

Find the probability:
rolling a number greater than or equal to 4 on a die 2 times in a row

• 1/4
• 1/6
• 1/3

Find the probability:
You flip a coin and then roll a fair six-sided die.  The coin lands heads-up and the die shows an even number.

• 1/12
• 1/6
• 1/4

Find the probability:
You rolled a fair six-sided die twice.  the first roll shows a 5 and the second roll shows a 6.

• 1/72
• 1/6
• 1/36

Find the probability:
There are 8 shirts in your closet, 4 blue and 4 green.  You randomly select to wear one on Monday and then a different one on Tuesday.  You wear a blue shirt both days.

• 1/2
• 3/14
• 1/4

Find the probability:
A basket contains 5 apples and 7 peaches.  You randomly selct one piece of fruit and eat it.  Then you randomly select another piece of fruit.  The first piece of fruit is an apple and the second piece is a peach.

• 12/132
• 35/144
• 35/132

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

CCSS.HSS.CP.B.8

CCSS.HSS.CP.B.9

There are 6 red marbles, 5 green marbles, and 4 yellow marbles in a bag. If Joe picks 2 marbles one after the other without replacement, then what is the probability that both are red in color?

• 2/5
• 1/21
• 4/25
• 1/7

Tags

CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6

CCSS.HSS.CP.B.8

CCSS.HSS.CP.B.9