WAEC Mathematics 2006 Question 2

Question 2

Number Bases

Simplify: 11011two − 1101two

  1. A.101000two
  2. B.1100two
  3. C.1110two
  4. D.1011two
Show the answer and explanation

Answer: C (1110two)

Explanation

11011two = 27 and 1101two = 13. 27 − 13 = 14 = 8 + 4 + 2 = 1110two.