JAMB Mathematics 2023 Question 20

Question 20

Number Bases

In base ten, the number 101101 (base2) equals

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

Answer: B (45)

Explanation

101101₂ = 32 + 8 + 4 + 1 = 45.