The X-Factor

"x" is definiely the most famous symbol in Mathematics. Infact, every other unknown entity that we come across we name it as "x". It has crept in so much into our lives that we take pleasure in introducing "most special people of the past" you and me had, to our current "special person" as "x"...as in x-gf/x-bf....in future probably x-wife/husband....:)

Ever wondered why is everyone in the world ignoring the rest 25 of the letters? Here's the answer...the Arabic word used to represent an unknown quantity was "shei". The mighty Greeks transcribed this into "Xei". With time this was shortened to "X" and hence we still use it today!