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Which of the following is a STRICT inequality?
Ax ≥ 3
Bx = 3
Cx ≤ 3
Dx < 3
Answer & Solution
Correct answer: D. x < 3
Strict inequalities use < or > (without equality). Slack inequalities use ≤ or ≥. x = 3 is an equation. x < 3 strictly excludes 3.
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