Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?

• A. (1/3)
• B. (1/16)
• C. (2/8)
• D. (1/8)

Answer: (D)

This is a simple division series; each number is one-half of the previous number. In other terms to say, the number is divided by 2 successively to get the next result. 4/2 = 2 2/2 = 1 1/2 = 1/2 (1/2)/2 = 1/4 (1/4)/2 = 1/8 and so on.