WAEC Mathematics 2018 Question 4

Question 4

Number Bases

Find the value of x for which 32four = 22x.

  1. A.three
  2. B.five
  3. C.six
  4. D.seven
Show the answer and explanation

Answer: C (six)

Explanation

32four = 12 + 2 = 14 and 22x = 2x + 2, so 2x + 2 = 14 and x = 6.