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Which number belongs to the interval (1, 4)?

Answer and explanation

Correct answer: 3

The open interval (1, 4) contains all real numbers strictly greater than 1 and strictly less than 4. Its endpoints, 1 and 4, are excluded because round parentheses are used. The number 3 lies between the endpoints, so 3 belongs to the interval. The numbers 1, 4, and 5 do not satisfy both strict inequalities.

Related tags

Open-IntervalInterval-MembershipReal-NumbersSetsRepresentation On Number LineLinear InequalitiesMathematicsClass 12 Mcq

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