Riddle: 1, 11, 21, 1211, 111221, 312211. What is the next number in the sequence?
The answer: Riddles have always been a popular form of brain training fun.
You may be seen the “1 11 21” a riddle on the Internet or on social media and have been struggling with its answer for a while.
1 11 21 Riddle
This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities.
The answer to the 1 11 21 riddle is 13112221.