Probability 1( O'level Revision)

In a group of 35 students, 14 go to school by bus.

Write down the probability that a student, chosen at random, does not go to school by bus.

Give your answer as a fraction in its lowest terms.

• $\frac{3}{5}$

• $\frac{2}{5}$

• $\frac{21}{35}$

When Ali takes a penalty, the probability that he will score a goal is  $\frac{4}{5}$  . Ali takes 30 penalties.
Find how many times he is expected to score a goal.

• 6

• 24

• 20

During April the probability that it will rain on any one day is  $\frac{5}{6}$  . 
On how many of the 30 days in April would it be expected to rain?

• 25

• 12

• 15

A bowl of fruit contains only 8 peaches,

5 oranges and 6 apples.

One piece of fruit is chosen at random.

Write down the probability that it is an orange,

• $\frac{5}{19}$

• $0.2$

• $\frac{6}{19}$

A bowl of fruit contains only 8 peaches,

5 oranges and 6 apples.

One piece of fruit is chosen at random.

Write down the probability that it is not a peach

• $\frac{8}{19}$

• $\frac{11}{19}$

• 11

The probability that the school bus is late is 0.29 .

Write down the probability that the school bus is not late.

• 0.22

• 0.71

• $\frac{29}{100}$

A fridge contains 12 beef pies, 3 vegetable pies and 5 chicken pies.

One pie is taken at random from the fridge.

Find the probability that it is

a beef pie or a vegetable pie,

• 15

• $\frac{15}{20}$

• $\frac{12}{20}\ or\ \frac{3}{20}$

A fridge contains 12 beef pies, 3 vegetable pies and 5 chicken pies.

One pie is taken at random from the fridge.

Find the probability that it is

a lamp pie

• 0

• 1

• 0.1

The probability that the school hockey team will win its next match is 0.45 .

The probability that it will lose its next match is 0.3 .

Work out the probability that the school hockey team will draw its next match.

• 0.25

• 1

• 0.5

Colin has some seeds.

The probability a seed will grow is 0.85 .

Find the probability that a seed will not grow.

• 0.25

• 0.15

• 1