In mathematics, 3, 6, and 9 exhibit fascinating patterns. For instance, multiplying any number by 9 and adding the digits of the result will eventually reduce to 9. Similarly, 3 and 6 are key components in patterns of symmetry and geometric progressions.
"If you only knew the magnificence of the numbers 3, 6, and 9, you would have the key to the universe."
Nikola Tesla