Probability Trees

The probability tree shows the outcomes of flipping a coin twice.

What is the probability the coin lands on heads twice?

• 0.5

• 0.1

• 0.25

• 1

What is the probability of getting the same outcome after the coin is flipped twice?

• 0.25

• 0.1

• 0.5

• 0.75

What is the probability that Matt and Thomas both score?

• 0.42

• 0.6

• 0.12

• 0.54

What is the probability at least one of them scores?

• 0.12

• 0.88

• 0.42

• 0.5

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

What is the probability of winning exactly one game?

• $\frac{3}{15}$

• $\frac{13}{15}$

• $\frac{7}{15}$

• 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

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