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A Closed Circle means that that number is INCLUDED in the line of numbers.

An OPEN circle means the line of numbers go up to the given number , BUT does NOT include the given number.

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lenpollock

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7mo ago

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More answers

It means that the value represented by the circle is part of the solution set.

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Wiki User

12y ago
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Q: What does a closed a circle in a number line mean?
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