Probability Trees Review

What is the probability that Matt and Thomas both score?

• 0.42

• 0.6

• 0.12

• 0.54

Here is a partially completed probability tree showing the probability of winning on a Teddy Grabber and a Penny Drop.

What is the probability of losing both games?

• $\frac{6}{15}$

• $\frac{3}{5}$

• $\frac{3}{15}$

• None of these

There are 5 lemon and 4 strawberry sweets in a bag.

Hailey takes out a sweet at random, writes down its flavour and puts it back into the bag.

Then Hailey takes out a second sweet, at random, and writes down its flavour.

What is the probability that Hailey took out at least one strawberry sweet?

• $\frac{25}{81}$

• $\frac{40}{81}$

• $\frac{56}{81}$

• None of these

How many different outfits can be made as seen in this tree diagram?

• 2

• 3

• 6

• 9

Tags

CCSS.3.OA.A.1

CCSS.3.OA.A.3

CCSS.3.OA.C.7

Jack tossed a coin three times. Which tree diagram shows all the possible outcomes of the coin landing heads up or tails up?

• 
• 
• 
• 

Tags

CCSS.7.SP.C.8

Bag A contains 9 red marbles and 3 green marbles. Bag B contains 9 black marbles and 6 orange marbles. Find the probability of selecting one green marble from bag A and one black marble from bag B.  P(green, black)

• 3/20
• 1/4
• 3/31
• 2/27

Tags

CCSS.7.SP.C.8

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. P(orange,green)

• 1/15
• 2/15
• 3/31
• 1/5

Tags

CCSS.7.SP.C.8

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A bag contains 2 blue marbles, 3 black marbles, and 5 red marbles. Mrs. Grow picks one marble, replaces it, then picks another. What is the probability of them both being blue?
P(blue and blue) 

• 1/25
• 1/5
• 1/20
• 2/5

Tags

CCSS.7.SP.C.8

CCSS.7.SP.C.5

CCSS.7.SP.C.7

Give yourself a confidence score:

1 - Really confident

2 - Somewhat confident

3 - I am struggling

• 1

• 2

• 3

Give yourself an effort score:

R - Not my best effort

A - I did OK, but I know I can try harder

G - I did my absolute best

• R

• A

• G