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Question

What does a coloured-in circle signify on a number line?

3 years ago

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1 Reply

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Luna Kerluke


1 Answer

Andrew B Profile Picture
Andrew B Verified Sherpa Tutor ✓

University lecturer in maths and statistics

A coloured dot when expressing a range for a number line indicates that we include the value in that range.


For example, the number line below indicates the range 2 to 5, including the numbers 2 and 5, so the numbers 2, 3, 4, and 5



Whereas this number line with a non-coloured dot on the 2 indicates not to include the number 2, so the numbers in this range are 3, 4, and 5


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