WAEC Mathematics 1992 Question 4

Question 4

Number Bases

Convert 77 to a number in base two

  1. A.1001101
  2. B.111001
  3. C.100110
  4. D.10101
  5. E.10011
Show the answer and explanation

Answer: A (1001101)

Explanation

77 = 64 + 8 + 4 + 1 = 26 + 23 + 22 + 20, which is 1001101 in base two.