WAEC Mathematics 1995 Question 1

Question 1

Number Bases

Find (1012)2, expressing the answer in base 2.

  1. A.10101
  2. B.11001
  3. C.10010
  4. D.11101
  5. E.10110.
Show the answer and explanation

Answer: B (11001)

Explanation

1012 = 5, and 5² = 25. In base 2, 25 = 16 + 8 + 1 = 110012.