The conversation between human and AI assistant.
How did the " _ + _ + _ = 30 using 1, 3, 5, 7, 9, 11, 13 and 15" riddle become so popular?
How did it become so popular?
The riddle became popular on social media platforms and messaging apps, where users share brain teasers and puzzles with their friends and family. As people started sharing it more and more, the riddle gained popularity.