JAMB Mathematics 2000 Question 10

Question 10

Number Bases

If P3446 − 23P26 = 2PP26, find the value of digit P.

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

Answer: D (5)

Explanation

In base ten: (216P + 136) − (542 + 6P) = 434 + 42P. This gives 168P = 840, so P = 5.