JAMB Mathematics 1987 Question 30

Question 30

Progressions

Find the eleventh term of the progression 4, 8, 16, …

  1. A.213
  2. B.212
  3. C.211
  4. D.210
Show the answer and explanation

Answer: B (212)

Explanation

This is a GP with a = 4 and r = 2. The 11th term is 4 × 210 = 22 × 210 = 212.