Best short riddles


What is the smallest number, that can be expressed as the sum of the cubes of two different sets of numbers?
Hardy-Ramanujan discovered 1729 as a magic number. Why 1729 is a magic number? 10^3 + 9^3 = 1729 and 12^3 + 1^3 = 1729 Taxicab number Ta(2)
80.15 %
61 votes

I cannot be felt, seen or touched, yet I can be found in everybody. My existence is always in debate, yet I have my own style of music.
I'm a soul.
80.14 %
48 votes