JAMB Mathematics 2007 Question 29

Question 29

Number Bases

If x10 = 12145 find x.

  1. A.124
  2. B.121
  3. C.184
  4. D.180
Show the answer and explanation

Answer: C (184)

Explanation

12145 = 1 × 125 + 2 × 25 + 1 × 5 + 4 = 184.