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If (x) is an integer, how many solutions does (-5<3x+1\le 10) have?

Answer and explanation

Correct answer: 5

Subtracting 1 from all three parts gives \(-6<3x\le 9\). Dividing by 3 gives \(-2<x\le 3\). The integers in this range are \(-1,0,1,2,3\), so there are 5 solutions. Option 4 misses \(x=3\), which is included because the upper inequality is \(\le\). Exam tip: In a compound inequality, check strict and inclusive endpoints separately.

Related tags

Linear InequalitiesInteger SolutionsCompound InequalitiesOne VariableAlgebraAlgebraic Solution Of Linear Inequalities In One VariableMathematicsClass 11 Mcq

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