JAMB Mathematics 2011 Question 2

Question 2

Number Bases

If 2q35 = 778, find q.

  1. A.2
  2. B.1
  3. C.4
  4. D.0
Show the answer and explanation

Answer: A (2)

Explanation

2q35 = 50 + 5q + 3 and 778 = 63. So 5q = 10 and q = 2.