JAMB Mathematics 2023 Objective — Question 21
Question 21 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2023 Objective paper, with the correct answer and a full explanation.
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If 2q3₅ = 77₈, find q.
- A. 1
- B. 2Correct
- C. 3
- D. 4
Explanation
2q3₅ in base 10 = 53+5q. 77₈ in base 10 = 63. 53+5q=63 ⇒ q=2.
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