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UI Post-UTME Mathematics 2019 (Model questions) Question 15

Question 15

Inequalities

What integers satisfy the inequality −2 ≤ 2x − 6 < 4?

  1. A.2, 3, 4, 5
  2. B.2, 3, 4
  3. C.2, 5
  4. D.3, 4, 5
Show the answer and explanation

Answer: B (2, 3, 4)

Explanation

Add 6: 4 ≤ 2x < 10, so 2 ≤ x < 5: the integers 2, 3, 4.