How many different ways can four people stand in line?
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Topics: Starter  Combinations  Investigations  Probability
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Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
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Here is a solution to this problem with at least one mistake.
Can you spot the mistake(s)?
In how many ways can 5, 10 or 100 people stand in line?
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In how many different ways can the letters in the word Google be arranged?
See the National Curriculum page for links to related online activities and resources.