Which number continues the sequence 7, 9, 11, 13, 15, ...?

Answer and explanation

Correct answer: B. 17

  1. Step 1: The difference is 2. Step 2. 15 + 2 = 17. Answer: 17. Why not the others: 19: the step was added twice. 16: the pattern was misjudged by one. 18: the pattern was misjudged by one.

Practise more Quantitative Reasoning.

Free questions with an explanation for every one, and full timed Sciences Po and Grandes Ecoles Entrance Practice mock tests.