WAEC Mathematics 2024 Objective — Question 27
Question 27 of 50 from the West African Examinations Council (WAEC) Mathematics 2024 Objective paper, with the correct answer and a full explanation.
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27. The number 1621 was subtracted from 6244 in base x. If the result was 4323, find x.
- A. SevenCorrect
- B. Eight
- C. Nine
- D. Ten
Explanation
Converting to base 10 and solving gives x² - 7x = 0, so x = 7 (base seven).
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