JAMB Mathematics 2025 Objective — Question 39
Question 39 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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The mean of five numbers is 20. If one number is removed, the mean becomes 18. What is the removed number?
- A. 24
- B. 20
- C. 14
- D. 28Correct
Explanation
Sum of 5 numbers=100. Sum of remaining 4=18×4=72. Removed number=100-72=28.
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