### #1 - Square Root 12345678987654321 Puzzle

The square root of number 121 is "11". What is the square root of number "12345678987654321." ?

111111111

It is a very popular square root series i.e.

Square root fo number 121 is 11

Square root fo number 12321 is 111

Square root fo number 1234321 is 1111 and so on....