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Which endpoint is not included in (2 ≤ x < 6) on the number line?

Answer and explanation

Correct answer: 6

The governing concept is interpreting inclusive and strict inequality signs at the endpoints. The condition 2 ≤ x permits x to equal 2, so 2 belongs to the solution set and is shown by a closed circle. The condition x < 6 requires x to be strictly less than 6; equality is not allowed, so 6 is excluded and is shown by an open circle. Combining the two conditions gives the interval [2, 6). Therefore the endpoint that is not included is 6, making option B correct. Option A incorrectly excludes 2. Option C claims that both endpoints are excluded, while option D claims that neither is excluded. Both statements conflict with the inequality symbols and the interval notation.

Related tags

Linear-InequalitiesMixed-EndpointsOpen-And-Closed-CirclesInterval-NotationRepresentation On Number LineLinear InequalitiesMathematicsClass 11 Mcq

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