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WAEC Mathematics 2018 Question 36

Question 36

Progressions

Find the nth term of the sequence 2 × 3, 4 × 6, 8 × 9, 16 × 12...

  1. A.2n × 3(n − 1)
  2. B.2n × 3n
  3. C.2n × 3n
  4. D.2n × 3n−1
Show the answer and explanation

Answer: B (2n × 3n)

Explanation

The first factors are 2, 4, 8, 16 = 2n and the second are 3, 6, 9, 12 = 3n.