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# What does an open circle signify on a number line?

2 years ago

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Leslie Murphy

1 Answer

Andrew B
Verified Sherpa Tutor ✓

University lecturer in maths and statistics

A blank dot when expressing a range for a number line indicates that we do not include the value in that range.

For example, 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

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

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