JAMB Mathematics 1980 Question 49

Question 49

Number Bases

Write the decimal number 39 to base 2

  1. A.100111
  2. B.110111
  3. C.111001
  4. D.100101
  5. E.19.5.
Show the answer and explanation

Answer: A (100111)

Explanation

39 = 32 + 4 + 2 + 1, so in base 2 it is 100111.