WAEC Mathematics 2007 Question 1

Question 1

Number Bases

Evaluate (111two)2 and leave your answer in base 2.

  1. A.111001two
  2. B.110001two
  3. C.101001two
  4. D.10010two
Show the answer and explanation

Answer: B (110001two)

Explanation

111two = 7, and 72 = 49 = 32 + 16 + 1 = 110001two.