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Probability of Picking Colours

In this worksheet, students calculate the probability of choosing or not choosing certain colours.

'Probability of Picking Colours' worksheet

Key stage:  KS 3

Curriculum topic:   Probability

Curriculum subtopic:   Record, Describe and Analyse Probability Experiments

Difficulty level:  

Worksheet Overview

Probability is written as a fraction.

On the top (numerator) of the fraction, we place the number of options we are looking for.

On the bottom (denominator) of the fraction, we place the total number of possible combinations.

 

 

Example

Look at these coloured cards.

 

What is the probability of selecting a red or blue card at random?

 

Answer

There are 2 options that "we are looking for". The red and the blue card.

There are 6 "possible combinations".

 

The probability of choosing a yellow card is 2/6 which reduces to 1/3.

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