Logic & Reasoning

Look at this series: 7, 10, 8, 11, 9, 12, . . . What number should come next?

a. 7
b. 10
c. 12
d. 13
  1. b. This is a simple alternating addition and subtraction series. In the first pattern, 3 is added; in the second, 2 is subtracted.

Test ID: 551
Source: 501 challenging logic & reasoning problems