JAMB Mathematics 1979 Question 7

Question 7

Number Bases

In base ten, the number 1 0 1 1 0 1 (base 2) equals

  1. A.15
  2. B.4
  3. C.45
  4. D.32
  5. E.90.
Show the answer and explanation

Answer: C (45)

Explanation

101101₂ = 32 + 8 + 4 + 1 = 45.