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JAMB Mathematics 1980 Question 7

Question 7

Inequalities

List all integer values of x satisfying the inequality −1 < 2x − 5 ≤ 5

  1. A.2, 3, 4, 5
  2. B.2, 5
  3. C.3, 4, 5
  4. D.2, 3, 4
  5. E.3.1.
Show the answer and explanation

Answer: C (3, 4, 5)

Explanation

Add 5: 4 < 2x ≤ 10, so 2 < x ≤ 5. The integers are 3, 4 and 5.