Multiple choice

What should come next in the following letter sequence?A A B A B C A B C D A B C D E A B C D

  1. A

  2. C

  3. E

  4. B

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sequence consists of repeating blocks of increasing length: (A), (A, B), (A, B, C), (A, B, C, D), (A, B, C, D, E). The next letter after the last D is E.