Cambridge Math Exercise

Solve the equation 3x + 5 = 17 for x.

• x = 8

• x = 10

• x = 4

• x = 2

A number is chosen from this list:

7, 11, 16, 24, 25, 26, 36, 43, 64, 100

Two possible outcomes are :

An odd number

A square number

Which outcome would happen if 25 was chosen ?

• An odd number

• A square number

• Both outcomes

Which spinner has equally likely outcomes?

• 
• 
• 
• 

A wallet contains $5, $10 and $20 notes. One note is taken from the wallet.

Which of these outcomes is not possible ?

• An amount under $10 is taken.

• An amount of $10 is taken.

• An amount of $20 or more is taken.

• An amount more than $20 is taken.

What is the probability of the spin stopping on yellow?

• 1/4

• 0.25

• 50%

• 75%

A dice is thrown 20 times with an outcome of 6 happening 15 times.

Find an estimate of the probability of getting a 6, written as a fraction in its simplest terms.

In a survey of 100 people, 92 said they used a computer every day.

What is the estimate of the probability that a person, chosen at random, does not use a computer every day given as a fraction in its simplest terms.

A bag contains two white balls and some red balls.

A ball is taken from the bag and the colour is recorded. The ball is then replaced. This is done 40 times.

The red ball has a frequency of 32.

How many balls are likely to be in the bag altogether ?

• 8

• 10

• 34

• 40

The triangle is to be first reflected in mirror 1 and then the new image is to be reflected in mirror 2.

Select the correct final position.

• 
• 
• 
• 

Which of these images is not created by reflecting, translating and/or rotating this moon shape.

• 
• 
• 
•