For years together, there was one thing which challenged and continues to challenge the best minds in the world. People of all ages have tried their best to get to the crux of it and expose the hidden mysteries that it conceals, but they have failed miserably. It occurs in a strange way. It gives everyone a sense of victory, of having conquered it and lets people bask in rays of their success and finally it unveils the truth. It boasts to the whole world that it is invincible and can never be conquered.
There is an air of enigma that surrounds the letter X.