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

Answer and explanation

Correct answer: 0

The interval (-1, 1) is an open interval, so it contains all real numbers strictly greater than -1 and strictly less than 1. The endpoints -1 and 1 are excluded because parentheses are used. The number 0 lies between these endpoints, so it belongs to the interval. The numbers 1, -1, and 2 do not satisfy the required strict bounds.

Related tags

SetsOpen IntervalNumber LineInterval MembershipReal NumbersRepresentation On Number LineLinear InequalitiesMathematics

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