SAL GCSE Probability

What is the probability of scoring a total of 3?

•  $\frac{2}{14}$  

•  $\frac{2}{16}$  

•  $\frac{1}{7}$  

•  $\frac{4}{24}$  

How many outcomes could occur if I were to roll two fair 6-sided dice

• 6

• 12

• 36

• 30

Two fair five-sided spinners, each marked 1,2,3,4 & 5 are spun at the same time.

What is the probability of obtaining the same number on both spinners

• $\frac{2}{20}$

• $\frac{1}{10}$

• $\frac{5}{10}$

• $\frac{5}{25}$

Michelle has a bent £1 coin.

The probability of it landing on heads is 0.7.

Michelle tosses the coin 4 times. What is the probability she gets 4 tails?

• 0.7 x 0.7 x 0.7 x 0.7

• 0.7 + 0.7 + 0.7 + 0.7

• 0.3 x 0.3 x 0.3 x 0.3

• 0.3 + 0.3 + 0.3 + 0.3

What is the probability that I win a game and lose a game?

• 2.0

• 0.24

• 0.48

• 0.2

• 55

• 51

• 48

• 100

• 1

• 2

• 3

• 4

There are green, blue, red and black pens in a box.

What should replace the star?

• 0.65

• 0.35

• 0.45

• Not enough information

The probability of winning a game is 0.7. If you played the game 40 times, how many times would you expect to win?

• 7

• 28

• 280

• 0.3

• 0.2 0.2

  
  0.8

• 0.8 0.8
  0.2

• 0.8 0.2
  0.8

• 0.8 0.5
  0.5